40426660 has 12 divisors (see below), whose sum is σ = 84896028. Its totient is φ = 16170656.

The previous prime is 40426637. The next prime is 40426669. The reversal of 40426660 is 6662404.

It can be written as a sum of positive squares in 2 ways, for example, as 29877156 + 10549504 = 5466^2 + 3248^2 .

It is not an unprimeable number, because it can be changed into a prime (40426669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010647 + ... + 1010686.

It is an arithmetic number, because the mean of its divisors is an integer number (7074669).

Almost surely, 2^40426660 is an apocalyptic number.

It is an amenable number.

40426660 is an abundant number, since it is smaller than the sum of its proper divisors (44469368).

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

40426660 is a wasteful number, since it uses less digits than its factorization.

40426660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021342 (or 2021340 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40426660 is about 6358.1962851111. The cubic root of 40426660 is about 343.2068553101.

The spelling of 40426660 in words is "forty million, four hundred twenty-six thousand, six hundred sixty".