74931648 has 112 divisors (see below), whose sum is σ = 229112064. Its totient is φ = 21360640.

The previous prime is 74931643. The next prime is 74931667. The reversal of 74931648 is 84613947.

It is a super-2 number, since 2×74931648² = 11229503743991808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74931643) 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, 34861 + ... + 36947.

Almost surely, 2^74931648 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 74931648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114556032).

74931648 is an abundant number, since it is smaller than the sum of its proper divisors (154180416).

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

74931648 is a wasteful number, since it uses less digits than its factorization.

74931648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2120 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 74931648 is about 8656.3068337484. The cubic root of 74931648 is about 421.5881819135.

The spelling of 74931648 in words is "seventy-four million, nine hundred thirty-one thousand, six hundred forty-eight".