39878080 has 56 divisors (see below), whose sum is σ = 103601520. Its totient is φ = 14499840.

The previous prime is 39878053. The next prime is 39878087. The reversal of 39878080 is 8087893.

It is a happy number.

It is a super-2 number, since 2×39878080² = 3180522528972800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39878087) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2145 + ... + 9184.

Almost surely, 2^39878080 is an apocalyptic number.

It is an amenable number.

39878080 is an abundant number, since it is smaller than the sum of its proper divisors (63723440).

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

39878080 is a wasteful number, since it uses less digits than its factorization.

39878080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357 (or 11347 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 39878080 is about 6314.9093421838. The cubic root of 39878080 is about 341.6473685974.

The spelling of 39878080 in words is "thirty-nine million, eight hundred seventy-eight thousand, eighty".