40144064 has 14 divisors (see below), whose sum is σ = 79661004. Its totient is φ = 20072000.

The previous prime is 40144061. The next prime is 40144079. The reversal of 40144064 is 46044104.

It is a super-2 number, since 2×40144064² = 3223091748872192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40144061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313562 + ... + 313689.

Almost surely, 2^40144064 is an apocalyptic number.

It is an amenable number.

40144064 is a deficient number, since it is larger than the sum of its proper divisors (39516940).

40144064 is an equidigital number, since it uses as much as digits as its factorization.

40144064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627263 (or 627253 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 40144064 is about 6335.9343430942. The cubic root of 40144064 is about 342.4052740330.

Adding to 40144064 its reverse (46044104), we get a palindrome (86188168).

The spelling of 40144064 in words is "forty million, one hundred forty-four thousand, sixty-four".