16200040 has 16 divisors (see below), whose sum is σ = 36450180. Its totient is φ = 6480000.

The previous prime is 16200029. The next prime is 16200053. The reversal of 16200040 is 4000261.

It can be written as a sum of positive squares in 2 ways, for example, as 15952036 + 248004 = 3994^2 + 498^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202461 + ... + 202540.

Almost surely, 2^16200040 is an apocalyptic number.

16200040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16200040 is an abundant number, since it is smaller than the sum of its proper divisors (20250140).

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

16200040 is a wasteful number, since it uses less digits than its factorization.

16200040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405012 (or 405008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 16200040 is about 4024.9273285365. The cubic root of 16200040 is about 253.0300078453.

The spelling of 16200040 in words is "sixteen million, two hundred thousand, forty".