72387146 has 16 divisors (see below), whose sum is σ = 119654304. Its totient is φ = 32631984.

The previous prime is 72387143. The next prime is 72387151. The reversal of 72387146 is 64178327.

It is not an unprimeable number, because it can be changed into a prime (72387143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31256 + ... + 33491.

It is an arithmetic number, because the mean of its divisors is an integer number (7478394).

Almost surely, 2^72387146 is an apocalyptic number.

72387146 is a deficient number, since it is larger than the sum of its proper divisors (47267158).

72387146 is a wasteful number, since it uses less digits than its factorization.

72387146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64805.

The product of its digits is 56448, while the sum is 38.

The square root of 72387146 is about 8508.0635869744. The cubic root of 72387146 is about 416.7610767043.

The spelling of 72387146 in words is "seventy-two million, three hundred eighty-seven thousand, one hundred forty-six".