40809268 has 48 divisors (see below), whose sum is σ = 79027200. Its totient is φ = 18374400.

The previous prime is 40809257. The next prime is 40809313. The reversal of 40809268 is 86290804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116758 + ... + 117106.

It is an arithmetic number, because the mean of its divisors is an integer number (1646400).

Almost surely, 2^40809268 is an apocalyptic number.

It is an amenable number.

40809268 is a deficient number, since it is larger than the sum of its proper divisors (38217932).

40809268 is a wasteful number, since it uses less digits than its factorization.

40809268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 40809268 is about 6388.2132087149. The cubic root of 40809268 is about 344.2861891883.

Subtracting 40809268 from its reverse (86290804), we obtain a square (45481536 = 6744²).

The spelling of 40809268 in words is "forty million, eight hundred nine thousand, two hundred sixty-eight".