73072215 has 12 divisors (see below), whose sum is σ = 126658584. Its totient is φ = 38971824.

The previous prime is 73072201. The next prime is 73072229. The reversal of 73072215 is 51227037.

It is an interprime number because it is at equal distance from previous prime (73072201) and next prime (73072229).

It is not a de Polignac number, because 73072215 - 2⁹ = 73071703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811869 + ... + 811958.

It is an arithmetic number, because the mean of its divisors is an integer number (10554882).

Almost surely, 2^73072215 is an apocalyptic number.

73072215 is a deficient number, since it is larger than the sum of its proper divisors (53586369).

73072215 is a wasteful number, since it uses less digits than its factorization.

73072215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623838 (or 1623835 counting only the distinct ones).

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

The square root of 73072215 is about 8548.2287639019. The cubic root of 73072215 is about 418.0716874522.

The spelling of 73072215 in words is "seventy-three million, seventy-two thousand, two hundred fifteen".