74403648 has 84 divisors (see below), whose sum is σ = 232672128. Its totient is φ = 22544640.

The previous prime is 74403629. The next prime is 74403649. The reversal of 74403648 is 84630447.

74403648 is a `hidden beast` number, since 7 + 4 + 4 + 0 + 3 + 648 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74403649) 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 11 ways as a sum of consecutive naturals, for example, 465 + ... + 12207.

Almost surely, 2^74403648 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 74403648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116336064).

74403648 is an abundant number, since it is smaller than the sum of its proper divisors (158268480).

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

74403648 is a wasteful number, since it uses less digits than its factorization.

74403648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11772 (or 11759 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 74403648 is about 8625.7549234835. The cubic root of 74403648 is about 420.5956175185.

The spelling of 74403648 in words is "seventy-four million, four hundred three thousand, six hundred forty-eight".