232856428 has 72 divisors (see below), whose sum is σ = 498143520. Its totient is φ = 94832640.

The previous prime is 232856411. The next prime is 232856441. The reversal of 232856428 is 824658232.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403276 + ... + 403852.

It is an arithmetic number, because the mean of its divisors is an integer number (6918660).

Almost surely, 2^232856428 is an apocalyptic number.

232856428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 232856428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249071760).

232856428 is an abundant number, since it is smaller than the sum of its proper divisors (265287092).

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

232856428 is a wasteful number, since it uses less digits than its factorization.

232856428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 686 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 232856428 is about 15259.6339405636. The cubic root of 232856428 is about 615.2185338338.

The spelling of 232856428 in words is "two hundred thirty-two million, eight hundred fifty-six thousand, four hundred twenty-eight".