72899871 has 16 divisors (see below), whose sum is σ = 106202880. Its totient is φ = 44112320.

The previous prime is 72899851. The next prime is 72899873. The reversal of 72899871 is 17899827.

It is a cyclic number.

It is not a de Polignac number, because 72899871 - 2¹¹ = 72897823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72899873) 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, 26371 + ... + 29003.

It is an arithmetic number, because the mean of its divisors is an integer number (6637680).

Almost surely, 2^72899871 is an apocalyptic number.

72899871 is a deficient number, since it is larger than the sum of its proper divisors (33303009).

72899871 is a wasteful number, since it uses less digits than its factorization.

72899871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its digits is 508032, while the sum is 51.

The square root of 72899871 is about 8538.1421281213. The cubic root of 72899871 is about 417.7427486197.

The spelling of 72899871 in words is "seventy-two million, eight hundred ninety-nine thousand, eight hundred seventy-one".