78330552 has 64 divisors (see below), whose sum is σ = 203980800. Its totient is φ = 25038720.

The previous prime is 78330547. The next prime is 78330587. The reversal of 78330552 is 25503387.

It is a super-2 number, since 2×78330552² = 12271350753249408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94074 + ... + 94902.

It is an arithmetic number, because the mean of its divisors is an integer number (3187200).

Almost surely, 2^78330552 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 78330552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101990400).

78330552 is an abundant number, since it is smaller than the sum of its proper divisors (125650248).

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

78330552 is a wasteful number, since it uses less digits than its factorization.

78330552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 78330552 is about 8850.4549035629. The cubic root of 78330552 is about 427.8685799087.

The spelling of 78330552 in words is "seventy-eight million, three hundred thirty thousand, five hundred fifty-two".