74165020 has 96 divisors (see below), whose sum is σ = 170989056. Its totient is φ = 26956800.

The previous prime is 74165011. The next prime is 74165053. The reversal of 74165020 is 2056147.

74165020 = 120² + 121² + ... + 607².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1215790 + ... + 1215850.

It is an arithmetic number, because the mean of its divisors is an integer number (1781136).

Almost surely, 2^74165020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74165020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85494528).

74165020 is an abundant number, since it is smaller than the sum of its proper divisors (96824036).

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

74165020 is a wasteful number, since it uses less digits than its factorization.

74165020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 74165020 is about 8611.9115183564. The cubic root of 74165020 is about 420.1454900341.

The spelling of 74165020 in words is "seventy-four million, one hundred sixty-five thousand, twenty".