72837987 has 16 divisors (see below), whose sum is σ = 101633280. Its totient is φ = 46312992.

The previous prime is 72837983. The next prime is 72837991. The reversal of 72837987 is 78973827.

It is an interprime number because it is at equal distance from previous prime (72837983) and next prime (72837991).

It is not a de Polignac number, because 72837987 - 2² = 72837983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72837983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26064 + ... + 28722.

It is an arithmetic number, because the mean of its divisors is an integer number (6352080).

Almost surely, 2^72837987 is an apocalyptic number.

72837987 is a deficient number, since it is larger than the sum of its proper divisors (28795293).

72837987 is a wasteful number, since it uses less digits than its factorization.

72837987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082.

The product of its digits is 1185408, while the sum is 51.

The square root of 72837987 is about 8534.5173853007. The cubic root of 72837987 is about 417.6245092209.

The spelling of 72837987 in words is "seventy-two million, eight hundred thirty-seven thousand, nine hundred eighty-seven".