74805720 has 64 divisors (see below), whose sum is σ = 244823040. Its totient is φ = 18134400.

The previous prime is 74805713. The next prime is 74805727. The reversal of 74805720 is 2750847.

It is an interprime number because it is at equal distance from previous prime (74805713) and next prime (74805727).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74805727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27016 + ... + 29655.

It is an arithmetic number, because the mean of its divisors is an integer number (3825360).

Almost surely, 2^74805720 is an apocalyptic number.

It is an amenable number.

74805720 is an abundant number, since it is smaller than the sum of its proper divisors (170017320).

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

74805720 is a wasteful number, since it uses less digits than its factorization.

74805720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56696 (or 56692 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 74805720 is about 8649.0300034166. The cubic root of 74805720 is about 421.3518797806.

The spelling of 74805720 in words is "seventy-four million, eight hundred five thousand, seven hundred twenty".