40737744 has 60 divisors (see below), whose sum is σ = 115179012. Its totient is φ = 13440000.

The previous prime is 40737737. The next prime is 40737757. The reversal of 40737744 is 44773704.

It can be written as a sum of positive squares in 2 ways, for example, as 31809600 + 8928144 = 5640^2 + 2988^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 40737699 and 40737708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13144 + ... + 15944.

Almost surely, 2^40737744 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 40737744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57589506).

40737744 is an abundant number, since it is smaller than the sum of its proper divisors (74441268).

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

40737744 is a wasteful number, since it uses less digits than its factorization.

40737744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The square root of 40737744 is about 6382.6126312036. The cubic root of 40737744 is about 344.0849348595.

The spelling of 40737744 in words is "forty million, seven hundred thirty-seven thousand, seven hundred forty-four".