74785872 has 80 divisors (see below), whose sum is σ = 223894400. Its totient is φ = 21067776.

The previous prime is 74785871. The next prime is 74785877. The reversal of 74785872 is 27858747.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74785871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23004 + ... + 26052.

It is an arithmetic number, because the mean of its divisors is an integer number (2798680).

Almost surely, 2^74785872 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 74785872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111947200).

74785872 is an abundant number, since it is smaller than the sum of its proper divisors (149108528).

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

74785872 is a wasteful number, since it uses less digits than its factorization.

74785872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140 (or 3134 counting only the distinct ones).

The product of its digits is 878080, while the sum is 48.

The square root of 74785872 is about 8647.8825153907. The cubic root of 74785872 is about 421.3146110981.

It can be divided in two parts, 74785 and 872, that added together give a palindrome (75657).

The spelling of 74785872 in words is "seventy-four million, seven hundred eighty-five thousand, eight hundred seventy-two".