78276264 has 64 divisors (see below), whose sum is σ = 214272000. Its totient is φ = 23632320.

The previous prime is 78276259. The next prime is 78276277. The reversal of 78276264 is 46267287.

It is a super-2 number, since 2×78276264² = 12254347011595392, which contains 22 as substring.

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, 126147 + ... + 126765.

It is an arithmetic number, because the mean of its divisors is an integer number (3348000).

Almost surely, 2^78276264 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 78276264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107136000).

78276264 is an abundant number, since it is smaller than the sum of its proper divisors (135995736).

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

78276264 is a wasteful number, since it uses less digits than its factorization.

78276264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1114 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 78276264 is about 8847.3874109818. The cubic root of 78276264 is about 427.7697104505.

The spelling of 78276264 in words is "seventy-eight million, two hundred seventy-six thousand, two hundred sixty-four".