74264520 has 128 divisors (see below), whose sum is σ = 245514240. Its totient is φ = 17821440.

The previous prime is 74264479. The next prime is 74264543. The reversal of 74264520 is 2546247.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 167419 + ... + 167861.

It is an arithmetic number, because the mean of its divisors is an integer number (1918080).

Almost surely, 2^74264520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74264520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122757120).

74264520 is an abundant number, since it is smaller than the sum of its proper divisors (171249720).

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

74264520 is a wasteful number, since it uses less digits than its factorization.

74264520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 74264520 is about 8617.6864644753. The cubic root of 74264520 is about 420.3332955305. Note that the first 3 decimals are identical.

The spelling of 74264520 in words is "seventy-four million, two hundred sixty-four thousand, five hundred twenty".