74859440 has 80 divisors (see below), whose sum is σ = 184675680. Its totient is φ = 28170240.

The previous prime is 74859437. The next prime is 74859461. The reversal of 74859440 is 4495847.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×74859440² = 11207871514227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94727 + ... + 95513.

It is an arithmetic number, because the mean of its divisors is an integer number (2308446).

Almost surely, 2^74859440 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 74859440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92337840).

74859440 is an abundant number, since it is smaller than the sum of its proper divisors (109816240).

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

74859440 is a wasteful number, since it uses less digits than its factorization.

74859440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 74859440 is about 8652.1349966352. The cubic root of 74859440 is about 421.4527170199.

The spelling of 74859440 in words is "seventy-four million, eight hundred fifty-nine thousand, four hundred forty".