74398090 has 32 divisors (see below), whose sum is σ = 145143936. Its totient is φ = 27293760.

The previous prime is 74398057. The next prime is 74398099. The reversal of 74398090 is 9089347.

It is not an unprimeable number, because it can be changed into a prime (74398099) 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, 19435 + ... + 22945.

It is an arithmetic number, because the mean of its divisors is an integer number (4535748).

Almost surely, 2^74398090 is an apocalyptic number.

74398090 is a deficient number, since it is larger than the sum of its proper divisors (70745846).

74398090 is a wasteful number, since it uses less digits than its factorization.

74398090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 74398090 is about 8625.4327427672. The cubic root of 74398090 is about 420.5851443374.

The spelling of 74398090 in words is "seventy-four million, three hundred ninety-eight thousand, ninety".