40323144 has 16 divisors (see below), whose sum is σ = 100807920. Its totient is φ = 13441040.

The previous prime is 40323109. The next prime is 40323169. The reversal of 40323144 is 44132304.

It is a self number, because there is not a number n which added to its sum of digits gives 40323144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840042 + ... + 840089.

It is an arithmetic number, because the mean of its divisors is an integer number (6300495).

Almost surely, 2^40323144 is an apocalyptic number.

It is an amenable number.

40323144 is an abundant number, since it is smaller than the sum of its proper divisors (60484776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40323144 is a wasteful number, since it uses less digits than its factorization.

40323144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680140 (or 1680136 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40323144 is about 6350.0507084589. The cubic root of 40323144 is about 342.9136678631.

Adding to 40323144 its reverse (44132304), we get a palindrome (84455448).

The spelling of 40323144 in words is "forty million, three hundred twenty-three thousand, one hundred forty-four".