74878464 has 120 divisors (see below), whose sum is σ = 211515480. Its totient is φ = 23511040.

The previous prime is 74878457. The next prime is 74878469. The reversal of 74878464 is 46487847.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74878469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1826284 + ... + 1826324.

It is an arithmetic number, because the mean of its divisors is an integer number (1762629).

Almost surely, 2^74878464 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 74878464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105757740).

74878464 is an abundant number, since it is smaller than the sum of its proper divisors (136637016).

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

74878464 is an equidigital number, since it uses as much as digits as its factorization.

74878464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 75 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 74878464 is about 8653.2343086270. The cubic root of 74878464 is about 421.4884152004.

It can be divided in two parts, 7487 and 8464, that added together give a palindrome (15951).

The spelling of 74878464 in words is "seventy-four million, eight hundred seventy-eight thousand, four hundred sixty-four".