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161016152 = 23112181919
BaseRepresentation
bin10011001100011…
…10100101011000
3102012222110122012
421212032211120
5312210004102
623551045052
73663420563
oct1146164530
9365873565
10161016152
1182986900
1245b10788
132748813b
14175554da
15e208752
hex998e958

161016152 has 48 divisors (see below), whose sum is σ = 334042800. Its totient is φ = 72705600.

The previous prime is 161016109. The next prime is 161016157. The reversal of 161016152 is 251610161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161016157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174749 + ... + 175667.

It is an arithmetic number, because the mean of its divisors is an integer number (6959225).

Almost surely, 2161016152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161016152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167021400).

161016152 is an abundant number, since it is smaller than the sum of its proper divisors (173026648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161016152 is a wasteful number, since it uses less digits than its factorization.

161016152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 161016152 is about 12689.2140024511. The cubic root of 161016152 is about 544.0303742412.

The spelling of 161016152 in words is "one hundred sixty-one million, sixteen thousand, one hundred fifty-two".

Divisors: 1 2 4 8 11 22 44 88 121 181 242 362 484 724 919 968 1448 1838 1991 3676 3982 7352 7964 10109 15928 20218 21901 40436 43802 80872 87604 111199 166339 175208 222398 332678 444796 665356 889592 1330712 1829729 3659458 7318916 14637832 20127019 40254038 80508076 161016152