40226660 has 12 divisors (see below), whose sum is σ = 84476028. Its totient is φ = 16090656.

The previous prime is 40226657. The next prime is 40226671. The reversal of 40226660 is 6662204.

It can be written as a sum of positive squares in 2 ways, for example, as 27793984 + 12432676 = 5272^2 + 3526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005647 + ... + 1005686.

It is an arithmetic number, because the mean of its divisors is an integer number (7039669).

Almost surely, 2^40226660 is an apocalyptic number.

It is an amenable number.

40226660 is an abundant number, since it is smaller than the sum of its proper divisors (44249368).

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

40226660 is a wasteful number, since it uses less digits than its factorization.

40226660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011342 (or 2011340 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40226660 is about 6342.4490537962. The cubic root of 40226660 is about 342.6399449421.

Adding to 40226660 its reverse (6662204), we get a palindrome (46888864).

The spelling of 40226660 in words is "forty million, two hundred twenty-six thousand, six hundred sixty".