74309900 has 72 divisors (see below), whose sum is σ = 186654720. Its totient is φ = 25151040.

The previous prime is 74309899. The next prime is 74309903. The reversal of 74309900 is 990347.

It is a happy number.

It is a super-2 number, since 2×74309900² = 11043922476020000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74309903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57461 + ... + 58739.

Almost surely, 2^74309900 is an apocalyptic number.

74309900 is a gapful number since it is divisible by the number (70) 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 74309900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93327360).

74309900 is an abundant number, since it is smaller than the sum of its proper divisors (112344820).

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

74309900 is a wasteful number, since it uses less digits than its factorization.

74309900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 74309900 is about 8620.3190196187. The cubic root of 74309900 is about 420.4188942390.

The spelling of 74309900 in words is "seventy-four million, three hundred nine thousand, nine hundred".