40251712 has 28 divisors (see below), whose sum is σ = 80078580. Its totient is φ = 20074496.

The previous prime is 40251707. The next prime is 40251719. The reversal of 40251712 is 21715204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21381376 + 18870336 = 4624^2 + 4344^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40251719) 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, 42864 + ... + 43792.

Almost surely, 2^40251712 is an apocalyptic number.

It is an amenable number.

40251712 is a deficient number, since it is larger than the sum of its proper divisors (39826868).

40251712 is an equidigital number, since it uses as much as digits as its factorization.

40251712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 40251712 is about 6344.4236932916. The cubic root of 40251712 is about 342.7110589297.

Adding to 40251712 its reverse (21715204), we get a palindrome (61966916).

The spelling of 40251712 in words is "forty million, two hundred fifty-one thousand, seven hundred twelve".