74981492 has 12 divisors (see below), whose sum is σ = 138936420. Its totient is φ = 35285376.

The previous prime is 74981447. The next prime is 74981503. The reversal of 74981492 is 29418947.

It can be written as a sum of positive squares in 2 ways, for example, as 70123876 + 4857616 = 8374^2 + 2204^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551267 + ... + 551402.

It is an arithmetic number, because the mean of its divisors is an integer number (11578035).

Almost surely, 2^74981492 is an apocalyptic number.

It is an amenable number.

74981492 is a deficient number, since it is larger than the sum of its proper divisors (63954928).

74981492 is a wasteful number, since it uses less digits than its factorization.

74981492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102690 (or 1102688 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 74981492 is about 8659.1854120350. The cubic root of 74981492 is about 421.6816403486.

The spelling of 74981492 in words is "seventy-four million, nine hundred eighty-one thousand, four hundred ninety-two".