40720336 has 10 divisors (see below), whose sum is σ = 78895682. Its totient is φ = 20360160.

The previous prime is 40720331. The next prime is 40720357. The reversal of 40720336 is 63302704.

It can be written as a sum of positive squares in only one way, i.e., 23580736 + 17139600 = 4856^2 + 4140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40720336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40720331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272495 + ... + 1272526.

Almost surely, 2^40720336 is an apocalyptic number.

It is an amenable number.

40720336 is a deficient number, since it is larger than the sum of its proper divisors (38175346).

40720336 is a wasteful number, since it uses less digits than its factorization.

40720336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545029 (or 2545023 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 40720336 is about 6381.2487806071. The cubic root of 40720336 is about 344.0359165672.

The spelling of 40720336 in words is "forty million, seven hundred twenty thousand, three hundred thirty-six".