74107638 has 48 divisors (see below), whose sum is σ = 184392000. Its totient is φ = 21273840.

The previous prime is 74107603. The next prime is 74107643. The reversal of 74107638 is 83670147.

74107638 is a `hidden beast` number, since 7 + 4 + 10 + 7 + 638 = 666.

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 23 ways as a sum of consecutive naturals, for example, 6088 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (3841500).

Almost surely, 2^74107638 is an apocalyptic number.

74107638 is an abundant number, since it is smaller than the sum of its proper divisors (110284362).

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

74107638 is a wasteful number, since it uses less digits than its factorization.

74107638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19737 (or 19734 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 74107638 is about 8608.5793253010. The cubic root of 74107638 is about 420.0371055653.

The spelling of 74107638 in words is "seventy-four million, one hundred seven thousand, six hundred thirty-eight".