74218056 has 128 divisors (see below), whose sum is σ = 223948800. Its totient is φ = 20218880.

The previous prime is 74218037. The next prime is 74218099. The reversal of 74218056 is 65081247.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102865 + ... + 103583.

It is an arithmetic number, because the mean of its divisors is an integer number (1749600).

Almost surely, 2^74218056 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 74218056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111974400).

74218056 is an abundant number, since it is smaller than the sum of its proper divisors (149730744).

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

74218056 is a wasteful number, since it uses less digits than its factorization.

74218056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 74218056 is about 8614.9901915208. The cubic root of 74218056 is about 420.2456159730.

It can be divided in two parts, 74 and 218056, that added together give a triangular number (218130 = T₆₆₀).

The spelling of 74218056 in words is "seventy-four million, two hundred eighteen thousand, fifty-six".