72073215 has 12 divisors (see below), whose sum is σ = 124926984. Its totient is φ = 38439024.

The previous prime is 72073193. The next prime is 72073241. The reversal of 72073215 is 51237027.

It is not a de Polignac number, because 72073215 - 2⁷ = 72073087 is a prime.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 800769 + ... + 800858.

It is an arithmetic number, because the mean of its divisors is an integer number (10410582).

Almost surely, 2^72073215 is an apocalyptic number.

72073215 is a deficient number, since it is larger than the sum of its proper divisors (52853769).

72073215 is a wasteful number, since it uses less digits than its factorization.

72073215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601638 (or 1601635 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 72073215 is about 8489.5945132851. The cubic root of 72073215 is about 416.1577291892.

The spelling of 72073215 in words is "seventy-two million, seventy-three thousand, two hundred fifteen".