74388490 has 16 divisors (see below), whose sum is σ = 146072160. Its totient is φ = 27050320.

The previous prime is 74388469. The next prime is 74388493. The reversal of 74388490 is 9488347.

74388490 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (74388493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338020 + ... + 338239.

It is an arithmetic number, because the mean of its divisors is an integer number (9129510).

Almost surely, 2^74388490 is an apocalyptic number.

74388490 is a deficient number, since it is larger than the sum of its proper divisors (71683670).

74388490 is a wasteful number, since it uses less digits than its factorization.

74388490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676277.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 74388490 is about 8624.8762309960. The cubic root of 74388490 is about 420.5670534112.

The spelling of 74388490 in words is "seventy-four million, three hundred eighty-eight thousand, four hundred ninety".