72194904 has 48 divisors (see below), whose sum is σ = 199227600. Its totient is φ = 23609664.

The previous prime is 72194897. The next prime is 72194921. The reversal of 72194904 is 40949127.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 5644 + ... + 13275.

It is an arithmetic number, because the mean of its divisors is an integer number (4150575).

Almost surely, 2^72194904 is an apocalyptic number.

It is an amenable number.

72194904 is an abundant number, since it is smaller than the sum of its proper divisors (127032696).

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

72194904 is a wasteful number, since it uses less digits than its factorization.

72194904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18984 (or 18977 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 72194904 is about 8496.7584407231. The cubic root of 72194904 is about 416.3918121897.

The spelling of 72194904 in words is "seventy-two million, one hundred ninety-four thousand, nine hundred four".