74109312 has 96 divisors (see below), whose sum is σ = 222608880. Its totient is φ = 23620608.

The previous prime is 74109293. The next prime is 74109331. The reversal of 74109312 is 21390147.

It is an interprime number because it is at equal distance from previous prime (74109293) and next prime (74109331).

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

It is a super-2 number, since 2×74109312² = 10984380250226688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25098 + ... + 27894.

Almost surely, 2^74109312 is an apocalyptic number.

74109312 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 74109312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111304440).

74109312 is an abundant number, since it is smaller than the sum of its proper divisors (148499568).

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

74109312 is a wasteful number, since it uses less digits than its factorization.

74109312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 2825 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 74109312 is about 8608.6765533385. The cubic root of 74109312 is about 420.0402682479.

Adding to 74109312 its reverse (21390147), we get a palindrome (95499459).

The spelling of 74109312 in words is "seventy-four million, one hundred nine thousand, three hundred twelve".