72540236 has 12 divisors (see below), whose sum is σ = 127013040. Its totient is φ = 36250800.

The previous prime is 72540211. The next prime is 72540253. The reversal of 72540236 is 63204527.

It is a junction number, because it is equal to n+sod(n) for n = 72540199 and 72540208.

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, 6650 + ... + 13758.

It is an arithmetic number, because the mean of its divisors is an integer number (10584420).

Almost surely, 2^72540236 is an apocalyptic number.

It is an amenable number.

72540236 is a deficient number, since it is larger than the sum of its proper divisors (54472804).

72540236 is a wasteful number, since it uses less digits than its factorization.

72540236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664 (or 9662 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 72540236 is about 8517.0555945115. The cubic root of 72540236 is about 417.0546694748.

The spelling of 72540236 in words is "seventy-two million, five hundred forty thousand, two hundred thirty-six".