40251244 has 12 divisors (see below), whose sum is σ = 76843368. Its totient is φ = 18296000.

The previous prime is 40251241. The next prime is 40251269. The reversal of 40251244 is 44215204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (40251241) 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, 457357 + ... + 457444.

It is an arithmetic number, because the mean of its divisors is an integer number (6403614).

Almost surely, 2^40251244 is an apocalyptic number.

40251244 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40251244 is a deficient number, since it is larger than the sum of its proper divisors (36592124).

40251244 is a wasteful number, since it uses less digits than its factorization.

40251244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914816 (or 914814 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40251244 is about 6344.3868104018. The cubic root of 40251244 is about 342.7097307096.

Adding to 40251244 its reverse (44215204), we get a palindrome (84466448).

The spelling of 40251244 in words is "forty million, two hundred fifty-one thousand, two hundred forty-four".