78265888 has 24 divisors (see below), whose sum is σ = 155822940. Its totient is φ = 38691840.

The previous prime is 78265871. The next prime is 78265897. The reversal of 78265888 is 88856287.

It can be written as a sum of positive squares in 2 ways, for example, as 76947984 + 1317904 = 8772^2 + 1148^2 .

It is a super-2 number, since 2×78265888² = 12251098448857088, which contains 22 as substring.

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, 10893 + ... + 16588.

Almost surely, 2^78265888 is an apocalyptic number.

It is an amenable number.

78265888 is a deficient number, since it is larger than the sum of its proper divisors (77557052).

78265888 is a wasteful number, since it uses less digits than its factorization.

78265888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27580 (or 27572 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 52.

The square root of 78265888 is about 8846.8010037527. The cubic root of 78265888 is about 427.7508084470.

The spelling of 78265888 in words is "seventy-eight million, two hundred sixty-five thousand, eight hundred eighty-eight".