40143216 has 20 divisors (see below), whose sum is σ = 103703432. Its totient is φ = 13381056.

The previous prime is 40143197. The next prime is 40143227. The reversal of 40143216 is 61234104.

It is a super-2 number, since 2×40143216² = 3222955581645312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40143192 and 40143201.

It is a congruent number.

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, 418111 + ... + 418206.

Almost surely, 2^40143216 is an apocalyptic number.

It is an amenable number.

40143216 is an abundant number, since it is smaller than the sum of its proper divisors (63560216).

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

40143216 is a wasteful number, since it uses less digits than its factorization.

40143216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836328 (or 836322 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40143216 is about 6335.8674228554. The cubic root of 40143216 is about 342.4028630354.

The spelling of 40143216 in words is "forty million, one hundred forty-three thousand, two hundred sixteen".