74320860 has 24 divisors (see below), whose sum is σ = 208098576. Its totient is φ = 19818880.

The previous prime is 74320859. The next prime is 74320867. The reversal of 74320860 is 6802347.

It is a super-2 number, since 2×74320860² = 11047180462279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74320867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619281 + ... + 619400.

It is an arithmetic number, because the mean of its divisors is an integer number (8670774).

Almost surely, 2^74320860 is an apocalyptic number.

It is an amenable number.

74320860 is an abundant number, since it is smaller than the sum of its proper divisors (133777716).

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

74320860 is a wasteful number, since it uses less digits than its factorization.

74320860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238693 (or 1238691 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 74320860 is about 8620.9547035117. The cubic root of 74320860 is about 420.4395624791.

The spelling of 74320860 in words is "seventy-four million, three hundred twenty thousand, eight hundred sixty".