78255232 has 32 divisors (see below), whose sum is σ = 170074800. Its totient is φ = 35569920.

The previous prime is 78255217. The next prime is 78255239. The reversal of 78255232 is 23255287.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×78255232² = 12247762670747648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78255239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26382 + ... + 29197.

Almost surely, 2^78255232 is an apocalyptic number.

It is an amenable number.

78255232 is an abundant number, since it is smaller than the sum of its proper divisors (91819568).

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

78255232 is a wasteful number, since it uses less digits than its factorization.

78255232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55604 (or 55592 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 78255232 is about 8846.1987316587. The cubic root of 78255232 is about 427.7313946274.

Subtracting from 78255232 its reverse (23255287), we obtain a palindrome (54999945).

It can be divided in two parts, 78255 and 232, that added together give a palindrome (78487).

The spelling of 78255232 in words is "seventy-eight million, two hundred fifty-five thousand, two hundred thirty-two".