74364280 has 64 divisors (see below), whose sum is σ = 171849600. Its totient is φ = 28953600.

The previous prime is 74364259. The next prime is 74364281. The reversal of 74364280 is 8246347.

It is a super-2 number, since 2×74364280² = 11060092279836800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74364281) 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, 319044 + ... + 319276.

It is an arithmetic number, because the mean of its divisors is an integer number (2685150).

Almost surely, 2^74364280 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 74364280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85924800).

74364280 is an abundant number, since it is smaller than the sum of its proper divisors (97485320).

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

74364280 is a wasteful number, since it uses less digits than its factorization.

74364280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 74364280 is about 8623.4726183829. The cubic root of 74364280 is about 420.5214234437.

The spelling of 74364280 in words is "seventy-four million, three hundred sixty-four thousand, two hundred eighty".