72102378 has 64 divisors (see below), whose sum is σ = 160496640. Its totient is φ = 21491712.

The previous prime is 72102361. The next prime is 72102383. The reversal of 72102378 is 87320127.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280426 + ... + 280682.

It is an arithmetic number, because the mean of its divisors is an integer number (2507760).

Almost surely, 2^72102378 is an apocalyptic number.

72102378 is an abundant number, since it is smaller than the sum of its proper divisors (88394262).

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

72102378 is a wasteful number, since it uses less digits than its factorization.

72102378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 72102378 is about 8491.3119127730. The cubic root of 72102378 is about 416.2138516165.

The spelling of 72102378 in words is "seventy-two million, one hundred two thousand, three hundred seventy-eight".