40143800 has 48 divisors (see below), whose sum is σ = 98832960. Its totient is φ = 15111680.

The previous prime is 40143799. The next prime is 40143821. The reversal of 40143800 is 834104.

It is a super-2 number, since 2×40143800² = 3223049356880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2504 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (2059020).

Almost surely, 2^40143800 is an apocalyptic number.

40143800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40143800 is an abundant number, since it is smaller than the sum of its proper divisors (58689160).

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

40143800 is a wasteful number, since it uses less digits than its factorization.

40143800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11840 (or 11831 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 40143800 is about 6335.9135095107. The cubic root of 40143800 is about 342.4045234430.

Adding to 40143800 its reverse (834104), we get a palindrome (40977904).

The spelling of 40143800 in words is "forty million, one hundred forty-three thousand, eight hundred".