78876538 has 32 divisors (see below), whose sum is σ = 132772752. Its totient is φ = 34905600.

The previous prime is 78876533. The next prime is 78876547. The reversal of 78876538 is 83567887.

It can be written as a sum of positive squares in 8 ways, for example, as 6235009 + 72641529 = 2497^2 + 8523^2 .

It is not an unprimeable number, because it can be changed into a prime (78876533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64420 + ... + 65632.

Almost surely, 2^78876538 is an apocalyptic number.

78876538 is a deficient number, since it is larger than the sum of its proper divisors (53896214).

78876538 is a wasteful number, since it uses less digits than its factorization.

78876538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330.

The product of its digits is 2257920, while the sum is 52.

The square root of 78876538 is about 8881.2464215334. The cubic root of 78876538 is about 428.8604005297.

The spelling of 78876538 in words is "seventy-eight million, eight hundred seventy-six thousand, five hundred thirty-eight".