74912838 has 64 divisors (see below), whose sum is σ = 201180672. Its totient is φ = 17959680.

The previous prime is 74912821. The next prime is 74912843. The reversal of 74912838 is 83821947.

It is a super-2 number, since 2×74912838² = 11223866594428488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 74912838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231 + ... + 12242.

It is an arithmetic number, because the mean of its divisors is an integer number (3143448).

Almost surely, 2^74912838 is an apocalyptic number.

74912838 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74912838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100590336).

74912838 is an abundant number, since it is smaller than the sum of its proper divisors (126267834).

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

74912838 is a wasteful number, since it uses less digits than its factorization.

74912838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12509.

The product of its digits is 96768, while the sum is 42.

The square root of 74912838 is about 8655.2202744933. The cubic root of 74912838 is about 421.5529020393.

The spelling of 74912838 in words is "seventy-four million, nine hundred twelve thousand, eight hundred thirty-eight".