74621872 has 80 divisors (see below), whose sum is σ = 164052000. Its totient is φ = 32643072.

The previous prime is 74621863. The next prime is 74621887. The reversal of 74621872 is 27812647.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536779 + ... + 536917.

It is an arithmetic number, because the mean of its divisors is an integer number (2050650).

Almost surely, 2^74621872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74621872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82026000).

74621872 is an abundant number, since it is smaller than the sum of its proper divisors (89430128).

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

74621872 is a wasteful number, since it uses less digits than its factorization.

74621872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 74621872 is about 8638.3952213360. The cubic root of 74621872 is about 421.0064148965.

The spelling of 74621872 in words is "seventy-four million, six hundred twenty-one thousand, eight hundred seventy-two".