72371278 has 16 divisors (see below), whose sum is σ = 131363424. Its totient is φ = 29191680.

The previous prime is 72371239. The next prime is 72371281. The reversal of 72371278 is 87217327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151803 + ... + 152278.

It is an arithmetic number, because the mean of its divisors is an integer number (8210214).

Almost surely, 2^72371278 is an apocalyptic number.

72371278 is a deficient number, since it is larger than the sum of its proper divisors (58992146).

72371278 is a wasteful number, since it uses less digits than its factorization.

72371278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304107.

The product of its digits is 32928, while the sum is 37.

The square root of 72371278 is about 8507.1310087479. The cubic root of 72371278 is about 416.7306217207.

It can be divided in two parts, 7237 and 1278, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 72371278 in words is "seventy-two million, three hundred seventy-one thousand, two hundred seventy-eight".