40744564 has 36 divisors (see below), whose sum is σ = 83534304. Its totient is φ = 17034192.

The previous prime is 40744549. The next prime is 40744567. The reversal of 40744564 is 46544704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40744567) 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, 51379 + ... + 52165.

Almost surely, 2^40744564 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 40744564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41767152).

40744564 is an abundant number, since it is smaller than the sum of its proper divisors (42789740).

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

40744564 is a wasteful number, since it uses less digits than its factorization.

40744564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 40744564 is about 6383.1468728206. The cubic root of 40744564 is about 344.1041351399.

The spelling of 40744564 in words is "forty million, seven hundred forty-four thousand, five hundred sixty-four".