74494784 has 56 divisors (see below), whose sum is σ = 181953408. Its totient is φ = 29468160.

The previous prime is 74494781. The next prime is 74494789. The reversal of 74494784 is 48749447.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74494781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572 + ... + 12219.

It is an arithmetic number, because the mean of its divisors is an integer number (3249168).

Almost surely, 2^74494784 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 74494784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90976704).

74494784 is an abundant number, since it is smaller than the sum of its proper divisors (107458624).

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

74494784 is a wasteful number, since it uses less digits than its factorization.

74494784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823 (or 12813 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 74494784 is about 8631.0360907599. The cubic root of 74494784 is about 420.7672747035.

The spelling of 74494784 in words is "seventy-four million, four hundred ninety-four thousand, seven hundred eighty-four".