74106388 has 12 divisors (see below), whose sum is σ = 131463220. Its totient is φ = 36545472.

The previous prime is 74106379. The next prime is 74106407. The reversal of 74106388 is 88360147.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50951044 + 23155344 = 7138^2 + 4812^2 .

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, 126603 + ... + 127186.

Almost surely, 2^74106388 is an apocalyptic number.

It is an amenable number.

74106388 is a deficient number, since it is larger than the sum of its proper divisors (57356832).

74106388 is a wasteful number, since it uses less digits than its factorization.

74106388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253866 (or 253864 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 74106388 is about 8608.5067230037. The cubic root of 74106388 is about 420.0347439134.

The spelling of 74106388 in words is "seventy-four million, one hundred six thousand, three hundred eighty-eight".