78233288 has 16 divisors (see below), whose sum is σ = 167642880. Its totient is φ = 33528528.

The previous prime is 78233263. The next prime is 78233291. The reversal of 78233288 is 88233287.

It is a super-2 number, since 2×78233288² = 12240894702581888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698456 + ... + 698567.

It is an arithmetic number, because the mean of its divisors is an integer number (10477680).

Almost surely, 2^78233288 is an apocalyptic number.

It is an amenable number.

78233288 is an abundant number, since it is smaller than the sum of its proper divisors (89409592).

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

78233288 is a wasteful number, since it uses less digits than its factorization.

78233288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397036 (or 1397032 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 78233288 is about 8844.9583379460. The cubic root of 78233288 is about 427.6914100156.

Subtracting 78233288 from its reverse (88233287), we obtain a palindrome (9999999).

It can be divided in two parts, 7823 and 3288, that added together give a palindrome (11111).

The spelling of 78233288 in words is "seventy-eight million, two hundred thirty-three thousand, two hundred eighty-eight".