Base | Representation |
---|---|
bin | 1000001010101… |
… | …00001110000000 |
3 | 11202220021121221 |
4 | 10011110032000 |
5 | 120014034100 |
6 | 10444124424 |
7 | 1461155311 |
oct | 405241600 |
9 | 152807557 |
10 | 68502400 |
11 | 3573895a |
12 | 1ab36714 |
13 | 11265c85 |
14 | 9152608 |
15 | 603201a |
hex | 4154380 |
68502400 has 48 divisors (see below), whose sum is σ = 169230240. Its totient is φ = 27399680.
The previous prime is 68502383. The next prime is 68502407. The reversal of 68502400 is 420586.
It is a Harshad number since it is a multiple of its sum of digits (25).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68502407) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7504 + ... + 13903.
It is an arithmetic number, because the mean of its divisors is an integer number (3525630).
Almost surely, 268502400 is an apocalyptic number.
It is an amenable number.
68502400 is an abundant number, since it is smaller than the sum of its proper divisors (100727840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68502400 is a wasteful number, since it uses less digits than its factorization.
68502400 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21431 (or 21414 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 25.
The square root of 68502400 is about 8276.6176666559. The cubic root of 68502400 is about 409.1682523424.
Adding to 68502400 its reverse (420586), we get a palindrome (68922986).
The spelling of 68502400 in words is "sixty-eight million, five hundred two thousand, four hundred".
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