74438964 has 36 divisors (see below), whose sum is σ = 190113924. Its totient is φ = 24556032.

The previous prime is 74438963. The next prime is 74438983. The reversal of 74438964 is 46983447.

It can be written as a sum of positive squares in 2 ways, for example, as 61779600 + 12659364 = 7860^2 + 3558^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×74438964² = 11082318722786592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74438963) 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, 7167 + ... + 14150.

Almost surely, 2^74438964 is an apocalyptic number.

It is an amenable number.

74438964 is an abundant number, since it is smaller than the sum of its proper divisors (115674960).

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

74438964 is a wasteful number, since it uses less digits than its factorization.

74438964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21424 (or 21419 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 74438964 is about 8627.8018057904. The cubic root of 74438964 is about 420.6621528104.

The spelling of 74438964 in words is "seventy-four million, four hundred thirty-eight thousand, nine hundred sixty-four".