72878070 has 16 divisors (see below), whose sum is σ = 174907440. Its totient is φ = 19434144.

The previous prime is 72878041. The next prime is 72878087. The reversal of 72878070 is 7087827.

It is a super-2 number, since 2×72878070² = 10622426173849800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214605 + ... + 1214664.

It is an arithmetic number, because the mean of its divisors is an integer number (10931715).

Almost surely, 2^72878070 is an apocalyptic number.

72878070 is an abundant number, since it is smaller than the sum of its proper divisors (102029370).

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

72878070 is a wasteful number, since it uses less digits than its factorization.

72878070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429279.

The product of its (nonzero) digits is 43904, while the sum is 39.

The square root of 72878070 is about 8536.8653497639. The cubic root of 72878070 is about 417.7011019174.

The spelling of 72878070 in words is "seventy-two million, eight hundred seventy-eight thousand, seventy".