74589240 has 128 divisors (see below), whose sum is σ = 246654720. Its totient is φ = 18043520.

The previous prime is 74589199. The next prime is 74589241. The reversal of 74589240 is 4298547.

It is a super-3 number, since 3×74589240³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74589241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159487 + ... + 159953.

It is an arithmetic number, because the mean of its divisors is an integer number (1926990).

Almost surely, 2^74589240 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 74589240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123327360).

74589240 is an abundant number, since it is smaller than the sum of its proper divisors (172065480).

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

74589240 is a wasteful number, since it uses less digits than its factorization.

74589240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 74589240 is about 8636.5062380571. The cubic root of 74589240 is about 420.9450375192.

The spelling of 74589240 in words is "seventy-four million, five hundred eighty-nine thousand, two hundred forty".