40143824 has 20 divisors (see below), whose sum is σ = 88890144. Its totient is φ = 17204448.

The previous prime is 40143821. The next prime is 40143841. The reversal of 40143824 is 42834104.

It is a super-2 number, since 2×40143824² = 3223053210685952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40143793 and 40143802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179102 + ... + 179325.

Almost surely, 2^40143824 is an apocalyptic number.

It is an amenable number.

40143824 is an abundant number, since it is smaller than the sum of its proper divisors (48746320).

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

40143824 is a wasteful number, since it uses less digits than its factorization.

40143824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358442 (or 358436 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40143824 is about 6335.9154034756. The cubic root of 40143824 is about 342.4045916786.

Adding to 40143824 its reverse (42834104), we get a palindrome (82977928).

The spelling of 40143824 in words is "forty million, one hundred forty-three thousand, eight hundred twenty-four".