74879856 has 160 divisors (see below), whose sum is σ = 229152000. Its totient is φ = 23369472.

The previous prime is 74879851. The next prime is 74879869. The reversal of 74879856 is 65897847.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (3386880) is a multiple of the sum of its prime divisors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74879851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538635 + ... + 538773.

It is an arithmetic number, because the mean of its divisors is an integer number (1432200).

Almost surely, 2^74879856 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 74879856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114576000).

74879856 is an abundant number, since it is smaller than the sum of its proper divisors (154272144).

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

74879856 is a wasteful number, since it uses less digits than its factorization.

74879856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 216 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 74879856 is about 8653.3147406066. The cubic root of 74879856 is about 421.4910270250.

Subtracting from 74879856 its reverse (65897847), we obtain a square (8982009 = 2997²).

The spelling of 74879856 in words is "seventy-four million, eight hundred seventy-nine thousand, eight hundred fifty-six".