74745280 has 56 divisors (see below), whose sum is σ = 179204112. Its totient is φ = 29693952.

The previous prime is 74745263. The next prime is 74745283. The reversal of 74745280 is 8254747.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74745283) 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, 51444 + ... + 52876.

Almost surely, 2^74745280 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 74745280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89602056).

74745280 is an abundant number, since it is smaller than the sum of its proper divisors (104458832).

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

74745280 is a wasteful number, since it uses less digits than its factorization.

74745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 74745280 is about 8645.5352639383. The cubic root of 74745280 is about 421.2383707720.

The spelling of 74745280 in words is "seventy-four million, seven hundred forty-five thousand, two hundred eighty".