74739988 has 12 divisors (see below), whose sum is σ = 130867380. Its totient is φ = 37349312.

The previous prime is 74739971. The next prime is 74739997. The reversal of 74739988 is 88993747.

It can be written as a sum of positive squares in 2 ways, for example, as 36942084 + 37797904 = 6078^2 + 6148^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5328 + ... + 13336.

It is an arithmetic number, because the mean of its divisors is an integer number (10905615).

Almost surely, 2^74739988 is an apocalyptic number.

It is an amenable number.

74739988 is a deficient number, since it is larger than the sum of its proper divisors (56127392).

74739988 is a wasteful number, since it uses less digits than its factorization.

74739988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10346 (or 10344 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 55.

The square root of 74739988 is about 8645.2292045960. The cubic root of 74739988 is about 421.2284292476.

The spelling of 74739988 in words is "seventy-four million, seven hundred thirty-nine thousand, nine hundred eighty-eight".