74555880 has 256 divisors, whose sum is σ = 283668480. Its totient is φ = 15273984.

The previous prime is 74555879. The next prime is 74555909. The reversal of 74555880 is 8855547.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 328327 + ... + 328553.

It is an arithmetic number, because the mean of its divisors is an integer number (1108080).

Almost surely, 2^74555880 is an apocalyptic number.

74555880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74555880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141834240).

74555880 is an abundant number, since it is smaller than the sum of its proper divisors (209112600).

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

74555880 is a wasteful number, since it uses less digits than its factorization.

74555880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 74555880 is about 8634.5746855303. The cubic root of 74555880 is about 420.8822723424.

The spelling of 74555880 in words is "seventy-four million, five hundred fifty-five thousand, eight hundred eighty".