74774490 has 48 divisors (see below), whose sum is σ = 208762272. Its totient is φ = 17090976.

The previous prime is 74774461. The next prime is 74774501. The reversal of 74774490 is 9447747.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23964 + ... + 26903.

It is an arithmetic number, because the mean of its divisors is an integer number (4349214).

Almost surely, 2^74774490 is an apocalyptic number.

74774490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

74774490 is an abundant number, since it is smaller than the sum of its proper divisors (133987782).

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

74774490 is a wasteful number, since it uses less digits than its factorization.

74774490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50891 (or 50884 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 74774490 is about 8647.2244101793. The cubic root of 74774490 is about 421.2932360885.

The spelling of 74774490 in words is "seventy-four million, seven hundred seventy-four thousand, four hundred ninety".