40726881 has 20 divisors (see below), whose sum is σ = 65520532. Its totient is φ = 25062048.

The previous prime is 40726879. The next prime is 40726913. The reversal of 40726881 is 18862704.

40726881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3272481 + 37454400 = 1809^2 + 6120^2 .

It is not a de Polignac number, because 40726881 - 2¹ = 40726879 is a prime.

It is a super-2 number, since 2×40726881² = 3317357671976322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40726801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18286 + ... + 20391.

Almost surely, 2^40726881 is an apocalyptic number.

It is an amenable number.

40726881 is a deficient number, since it is larger than the sum of its proper divisors (24793651).

40726881 is a wasteful number, since it uses less digits than its factorization.

40726881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38702 (or 38693 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 40726881 is about 6381.7615906582. The cubic root of 40726881 is about 344.0543479348.

The spelling of 40726881 in words is "forty million, seven hundred twenty-six thousand, eight hundred eighty-one".