72403715 has 4 divisors (see below), whose sum is σ = 86884464. Its totient is φ = 57922968.

The previous prime is 72403703. The next prime is 72403739. The reversal of 72403715 is 51730427.

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

It is a cyclic number.

It is not a de Polignac number, because 72403715 - 2⁶ = 72403651 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7240367 + ... + 7240376.

It is an arithmetic number, because the mean of its divisors is an integer number (21721116).

Almost surely, 2^72403715 is an apocalyptic number.

72403715 is a deficient number, since it is larger than the sum of its proper divisors (14480749).

72403715 is a wasteful number, since it uses less digits than its factorization.

72403715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480748.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72403715 is about 8509.0372545900. The cubic root of 72403715 is about 416.7928723470.

The spelling of 72403715 in words is "seventy-two million, four hundred three thousand, seven hundred fifteen".