40726656 has 48 divisors (see below), whose sum is σ = 117198510. Its totient is φ = 13575168.

The previous prime is 40726649. The next prime is 40726657. The reversal of 40726656 is 65662704.

It can be written as a sum of positive squares in only one way, i.e., 21013056 + 19713600 = 4584^2 + 4440^2 .

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a self number, because there is not a number n which added to its sum of digits gives 40726656.

It is not an unprimeable number, because it can be changed into a prime (40726657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16525 + ... + 18828.

Almost surely, 2^40726656 is an apocalyptic number.

It is an amenable number.

40726656 is an abundant number, since it is smaller than the sum of its proper divisors (76471854).

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

40726656 is a wasteful number, since it uses less digits than its factorization.

40726656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35373 (or 35358 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 40726656 is about 6381.7439622724. The cubic root of 40726656 is about 344.0537143453.

The spelling of 40726656 in words is "forty million, seven hundred twenty-six thousand, six hundred fifty-six".