78280896 has 28 divisors (see below), whose sum is σ = 207118712. Its totient is φ = 26093568.

The previous prime is 78280861. The next prime is 78280919. The reversal of 78280896 is 69808287.

It is a happy number.

It is a super-2 number, since 2×78280896² = 12255797357125632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203665 + ... + 204048.

Almost surely, 2^78280896 is an apocalyptic number.

It is an amenable number.

78280896 is an abundant number, since it is smaller than the sum of its proper divisors (128837816).

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

78280896 is a wasteful number, since it uses less digits than its factorization.

78280896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407728 (or 407718 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 78280896 is about 8847.6491793018. The cubic root of 78280896 is about 427.7781480454.

The spelling of 78280896 in words is "seventy-eight million, two hundred eighty thousand, eight hundred ninety-six".