78255300 has 72 divisors (see below), whose sum is σ = 238352800. Its totient is φ = 19768320.

The previous prime is 78255293. The next prime is 78255323. The reversal of 78255300 is 355287.

It is a happy number.

It is a super-2 number, since 2×78255300² = 12247783956180000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1165 + ... + 12564.

Almost surely, 2^78255300 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78255300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119176400).

78255300 is an abundant number, since it is smaller than the sum of its proper divisors (160097500).

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

78255300 is a wasteful number, since it uses less digits than its factorization.

78255300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13765 (or 13758 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 78255300 is about 8846.2025751166. The cubic root of 78255300 is about 427.7315185199.

The spelling of 78255300 in words is "seventy-eight million, two hundred fifty-five thousand, three hundred".