74928384 has 108 divisors (see below), whose sum is σ = 228864636. Its totient is φ = 23494656.

The previous prime is 74928331. The next prime is 74928397. The reversal of 74928384 is 48382947.

74928384 is a `hidden beast` number, since 7 + 492 + 83 + 84 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61968384 + 12960000 = 7872^2 + 3600^2 .

It is a super-2 number, since 2×74928384² = 11228525457702912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38212 + ... + 40124.

It is an arithmetic number, because the mean of its divisors is an integer number (2119117).

Almost surely, 2^74928384 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 74928384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114432318).

74928384 is an abundant number, since it is smaller than the sum of its proper divisors (153936252).

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

74928384 is a wasteful number, since it uses less digits than its factorization.

74928384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1935 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 74928384 is about 8656.1182986371. The cubic root of 74928384 is about 421.5820604066.

It can be divided in two parts, 7492 and 8384, that added together give a square (15876 = 126²).

The spelling of 74928384 in words is "seventy-four million, nine hundred twenty-eight thousand, three hundred eighty-four".