72102494 has 4 divisors (see below), whose sum is σ = 108153744. Its totient is φ = 36051246.

The previous prime is 72102479. The next prime is 72102509. The reversal of 72102494 is 49420127.

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

It is an interprime number because it is at equal distance from previous prime (72102479) and next prime (72102509).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18025622 + ... + 18025625.

It is an arithmetic number, because the mean of its divisors is an integer number (27038436).

Almost surely, 2^72102494 is an apocalyptic number.

72102494 is a deficient number, since it is larger than the sum of its proper divisors (36051250).

72102494 is a wasteful number, since it uses less digits than its factorization.

72102494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36051249.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72102494 is about 8491.3187432813. The cubic root of 72102494 is about 416.2140748213.

The spelling of 72102494 in words is "seventy-two million, one hundred two thousand, four hundred ninety-four".