74399730 has 16 divisors (see below), whose sum is σ = 178559424. Its totient is φ = 19839920.

The previous prime is 74399729. The next prime is 74399737. The reversal of 74399730 is 3799347.

It is not an unprimeable number, because it can be changed into a prime (74399737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239966 + ... + 1240025.

It is an arithmetic number, because the mean of its divisors is an integer number (11159964).

Almost surely, 2^74399730 is an apocalyptic number.

74399730 is an abundant number, since it is smaller than the sum of its proper divisors (104159694).

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

74399730 is a wasteful number, since it uses less digits than its factorization.

74399730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480001.

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 74399730 is about 8625.5278099372. The cubic root of 74399730 is about 420.5882347150.

The spelling of 74399730 in words is "seventy-four million, three hundred ninety-nine thousand, seven hundred thirty".