72877398 has 16 divisors (see below), whose sum is σ = 159005376. Its totient is φ = 22084040.

The previous prime is 72877397. The next prime is 72877411. The reversal of 72877398 is 89377827.

It is a super-2 number, since 2×72877398² = 10622230278500808, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72877398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72877397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552036 + ... + 552167.

It is an arithmetic number, because the mean of its divisors is an integer number (9937836).

Almost surely, 2^72877398 is an apocalyptic number.

72877398 is an abundant number, since it is smaller than the sum of its proper divisors (86127978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72877398 is a wasteful number, since it uses less digits than its factorization.

72877398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104219.

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

The square root of 72877398 is about 8536.8259909641. The cubic root of 72877398 is about 417.6998180561.

The spelling of 72877398 in words is "seventy-two million, eight hundred seventy-seven thousand, three hundred ninety-eight".