74918688 has 96 divisors (see below), whose sum is σ = 213627456. Its totient is φ = 22852608.

The previous prime is 74918639. The next prime is 74918689. The reversal of 74918688 is 88681947.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×74918688² = 11225619623282688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74918688.

It is not an unprimeable number, because it can be changed into a prime (74918689) 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, 215731 + ... + 216077.

It is an arithmetic number, because the mean of its divisors is an integer number (2225286).

Almost surely, 2^74918688 is an apocalyptic number.

74918688 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74918688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106813728).

74918688 is an abundant number, since it is smaller than the sum of its proper divisors (138708768).

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

74918688 is a wasteful number, since it uses less digits than its factorization.

74918688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 538 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 74918688 is about 8655.5582142344. The cubic root of 74918688 is about 421.5638748817.

The spelling of 74918688 in words is "seventy-four million, nine hundred eighteen thousand, six hundred eighty-eight".