72378188 has 12 divisors (see below), whose sum is σ = 127207080. Its totient is φ = 36033312.

The previous prime is 72378169. The next prime is 72378221. The reversal of 72378188 is 88187327.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 37898 + ... + 39761.

It is an arithmetic number, because the mean of its divisors is an integer number (10600590).

Almost surely, 2^72378188 is an apocalyptic number.

It is an amenable number.

72378188 is a deficient number, since it is larger than the sum of its proper divisors (54828892).

72378188 is a wasteful number, since it uses less digits than its factorization.

72378188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77896 (or 77894 counting only the distinct ones).

The product of its digits is 150528, while the sum is 44.

The square root of 72378188 is about 8507.5371289228. The cubic root of 72378188 is about 416.7438844267.

The spelling of 72378188 in words is "seventy-two million, three hundred seventy-eight thousand, one hundred eighty-eight".