16312040 has 16 divisors (see below), whose sum is σ = 36702180. Its totient is φ = 6524800.

The previous prime is 16312039. The next prime is 16312063. The reversal of 16312040 is 4021361.

It can be written as a sum of positive squares in 2 ways, for example, as 15007876 + 1304164 = 3874^2 + 1142^2 .

It is a plaindrome in base 14.

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, 203861 + ... + 203940.

Almost surely, 2^16312040 is an apocalyptic number.

16312040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16312040 is an abundant number, since it is smaller than the sum of its proper divisors (20390140).

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

16312040 is a wasteful number, since it uses less digits than its factorization.

16312040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407812 (or 407808 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16312040 is about 4038.8166583790. The cubic root of 16312040 is about 253.6117821684.

The spelling of 16312040 in words is "sixteen million, three hundred twelve thousand, forty".