40145344 has 14 divisors (see below), whose sum is σ = 79663544. Its totient is φ = 20072640.

The previous prime is 40145321. The next prime is 40145353. The reversal of 40145344 is 44354104.

It is a super-2 number, since 2×40145344² = 3223297289756672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313572 + ... + 313699.

Almost surely, 2^40145344 is an apocalyptic number.

It is an amenable number.

40145344 is a deficient number, since it is larger than the sum of its proper divisors (39518200).

40145344 is an equidigital number, since it uses as much as digits as its factorization.

40145344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627283 (or 627273 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40145344 is about 6336.0353534367. The cubic root of 40145344 is about 342.4089132102.

Adding to 40145344 its reverse (44354104), we get a palindrome (84499448).

The spelling of 40145344 in words is "forty million, one hundred forty-five thousand, three hundred forty-four".