64293944 has 64 divisors (see below), whose sum is σ = 145031040. Its totient is φ = 26328960.

The previous prime is 64293923. The next prime is 64293961. The reversal of 64293944 is 44939246.

64293944 = T₄₀ + T₄₁ + ... + T₇₂₇.

It is a super-2 number, since 2×64293944² = 8267422470150272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48539 + ... + 49845.

It is an arithmetic number, because the mean of its divisors is an integer number (2266110).

Almost surely, 2^64293944 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 64293944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72515520).

64293944 is an abundant number, since it is smaller than the sum of its proper divisors (80737096).

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

64293944 is a wasteful number, since it uses less digits than its factorization.

64293944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1376 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 64293944 is about 8018.3504538028. The cubic root of 64293944 is about 400.6114481849.

The spelling of 64293944 in words is "sixty-four million, two hundred ninety-three thousand, nine hundred forty-four".