40232144 has 10 divisors (see below), whose sum is σ = 77949810. Its totient is φ = 20116064.

The previous prime is 40232131. The next prime is 40232147. The reversal of 40232144 is 44123204.

It can be written as a sum of positive squares in only one way, i.e., 37063744 + 3168400 = 6088^2 + 1780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40232147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257239 + ... + 1257270.

It is an arithmetic number, because the mean of its divisors is an integer number (7794981).

Almost surely, 2^40232144 is an apocalyptic number.

It is an amenable number.

40232144 is a deficient number, since it is larger than the sum of its proper divisors (37717666).

40232144 is a wasteful number, since it uses less digits than its factorization.

40232144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514517 (or 2514511 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40232144 is about 6342.8813641751. The cubic root of 40232144 is about 342.6555146503.

Adding to 40232144 its reverse (44123204), we get a palindrome (84355348).

The spelling of 40232144 in words is "forty million, two hundred thirty-two thousand, one hundred forty-four".