72878799 has 16 divisors (see below), whose sum is σ = 114636800. Its totient is φ = 40301280.

The previous prime is 72878797. The next prime is 72878801. The reversal of 72878799 is 99787827.

It is an interprime number because it is at equal distance from previous prime (72878797) and next prime (72878801).

It is not a de Polignac number, because 72878799 - 2¹ = 72878797 is a prime.

It is a super-2 number, since 2×72878799² = 10622638687364802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72878797) 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, 55324 + ... + 56625.

It is an arithmetic number, because the mean of its divisors is an integer number (7164800).

Almost surely, 2^72878799 is an apocalyptic number.

72878799 is a deficient number, since it is larger than the sum of its proper divisors (41758001).

72878799 is a wasteful number, since it uses less digits than its factorization.

72878799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111990.

The product of its digits is 3556224, while the sum is 57.

The square root of 72878799 is about 8536.9080468282. The cubic root of 72878799 is about 417.7024946688.

The spelling of 72878799 in words is "seventy-two million, eight hundred seventy-eight thousand, seven hundred ninety-nine".