72302505 has 32 divisors (see below), whose sum is σ = 132848640. Its totient is φ = 33209280.

The previous prime is 72302453. The next prime is 72302521. The reversal of 72302505 is 50520327.

It is not a de Polignac number, because 72302505 - 2⁹ = 72301993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8397 + ... + 14666.

It is an arithmetic number, because the mean of its divisors is an integer number (4151520).

Almost surely, 2^72302505 is an apocalyptic number.

It is an amenable number.

72302505 is a deficient number, since it is larger than the sum of its proper divisors (60546135).

72302505 is a wasteful number, since it uses less digits than its factorization.

72302505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23101.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 72302505 is about 8503.0879684971. The cubic root of 72302505 is about 416.5985762513.

The spelling of 72302505 in words is "seventy-two million, three hundred two thousand, five hundred five".