233728840 has 32 divisors (see below), whose sum is σ = 542856960. Its totient is φ = 90475200.

The previous prime is 233728813. The next prime is 233728841. The reversal of 233728840 is 48827332.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 233728840.

It is not an unprimeable number, because it can be changed into a prime (233728841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93006 + ... + 95485.

It is an arithmetic number, because the mean of its divisors is an integer number (16964280).

Almost surely, 2^233728840 is an apocalyptic number.

233728840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233728840 is an abundant number, since it is smaller than the sum of its proper divisors (309128120).

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

233728840 is a wasteful number, since it uses less digits than its factorization.

233728840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188533 (or 188529 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 233728840 is about 15288.1928297625. The cubic root of 233728840 is about 615.9858952750.

The spelling of 233728840 in words is "two hundred thirty-three million, seven hundred twenty-eight thousand, eight hundred forty".