Base | Representation |
---|---|
bin | 10011001101110… |
… | …00101001000000 |
3 | 102020022012221100 |
4 | 21212320221000 |
5 | 312231012131 |
6 | 23554454400 |
7 | 3665036034 |
oct | 1146705100 |
9 | 366265840 |
10 | 161188416 |
11 | 82a94274 |
12 | 45b94400 |
13 | 2751867c |
14 | 1759c1c4 |
15 | e23e7e6 |
hex | 99b8a40 |
161188416 has 105 divisors (see below), whose sum is σ = 483018211. Its totient is φ = 51393408.
The previous prime is 161188411. The next prime is 161188429. The reversal of 161188416 is 614881161.
The square root of 161188416 is 12696.
It is a perfect power (a square), and thus also a powerful number.
161188416 is a `hidden beast` number, since 1 + 61 + 188 + 416 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nude number because it is divisible by every one of its digits.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (161188411) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7008181 + ... + 7008203.
Almost surely, 2161188416 is an apocalyptic number.
161188416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
161188416 is the 12696-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 161188416
161188416 is an abundant number, since it is smaller than the sum of its proper divisors (321829795).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161188416 is an frugal number, since it uses more digits than its factorization.
161188416 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 110 (or 28 counting only the distinct ones).
The product of its digits is 9216, while the sum is 36.
The cubic root of 161188416 is about 544.2243163725.
Multiplying 161188416 by its sum of digits (36), we get a 4-th power (5802782976 = 2764).
161188416 divided by its sum of digits (36) gives a 4-th power (4477456 = 464).
Multiplying 161188416 by its product of digits (9216), we get a 4-th power (1485512441856 = 11044).
It can be divided in two parts, 161188 and 416, that added together give a square (161604 = 4022).
The spelling of 161188416 in words is "one hundred sixty-one million, one hundred eighty-eight thousand, four hundred sixteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •