74509152 has 24 divisors (see below), whose sum is σ = 195586776. Its totient is φ = 24836352.

The previous prime is 74509133. The next prime is 74509163. The reversal of 74509152 is 25190547.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×74509152² = 11103227463518208, 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 3 ways as a sum of consecutive naturals, for example, 387973 + ... + 388164.

It is an arithmetic number, because the mean of its divisors is an integer number (8149449).

Almost surely, 2^74509152 is an apocalyptic number.

It is an amenable number.

74509152 is an abundant number, since it is smaller than the sum of its proper divisors (121077624).

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

74509152 is a wasteful number, since it uses less digits than its factorization.

74509152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776150 (or 776142 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 74509152 is about 8631.8683956604. The cubic root of 74509152 is about 420.7943244523.

Adding to 74509152 its reverse (25190547), we get a palindrome (99699699).

The spelling of 74509152 in words is "seventy-four million, five hundred nine thousand, one hundred fifty-two".