74921112 has 160 divisors (see below), whose sum is σ = 243936000. Its totient is φ = 21041856.

The previous prime is 74921111. The next prime is 74921113. The reversal of 74921112 is 21112947.

It is an interprime number because it is at equal distance from previous prime (74921111) and next prime (74921113).

It is a super-2 number, since 2×74921112² = 11226346046633088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74921111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 376389 + ... + 376587.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 2^74921112 is an apocalyptic number.

74921112 is a gapful number since it is divisible by the number (72) 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 74921112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121968000).

74921112 is an abundant number, since it is smaller than the sum of its proper divisors (169014888).

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

74921112 is a wasteful number, since it uses less digits than its factorization.

74921112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 294 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 74921112 is about 8655.6982387327. The cubic root of 74921112 is about 421.5684214100.

The spelling of 74921112 in words is "seventy-four million, nine hundred twenty-one thousand, one hundred twelve".