72563902 has 4 divisors (see below), whose sum is σ = 108845856. Its totient is φ = 36281950.

The previous prime is 72563893. The next prime is 72563903. The reversal of 72563902 is 20936527.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72563903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18140974 + ... + 18140977.

It is an arithmetic number, because the mean of its divisors is an integer number (27211464).

Almost surely, 2^72563902 is an apocalyptic number.

72563902 is a deficient number, since it is larger than the sum of its proper divisors (36281954).

72563902 is a wasteful number, since it uses less digits than its factorization.

72563902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36281953.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 72563902 is about 8518.4448111143. Note that the first 3 decimals coincide. The cubic root of 72563902 is about 417.1000187558.

The spelling of 72563902 in words is "seventy-two million, five hundred sixty-three thousand, nine hundred two".