40143744 has 48 divisors (see below), whose sum is σ = 115521120. Its totient is φ = 13380864.

The previous prime is 40143731. The next prime is 40143757. The reversal of 40143744 is 44734104.

It is an interprime number because it is at equal distance from previous prime (40143731) and next prime (40143757).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×40143744² = 3223040364675072, 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 in 5 ways as a sum of consecutive naturals, for example, 16272 + ... + 18575.

It is an arithmetic number, because the mean of its divisors is an integer number (2406690).

Almost surely, 2^40143744 is an apocalyptic number.

It is an amenable number.

40143744 is an abundant number, since it is smaller than the sum of its proper divisors (75377376).

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

40143744 is a wasteful number, since it uses less digits than its factorization.

40143744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34867 (or 34852 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 40143744 is about 6335.9090902569. The cubic root of 40143744 is about 342.4043642266.

Adding to 40143744 its reverse (44734104), we get a palindrome (84877848).

The spelling of 40143744 in words is "forty million, one hundred forty-three thousand, seven hundred forty-four".