16206140 has 12 divisors (see below), whose sum is σ = 34032936. Its totient is φ = 6482448.

The previous prime is 16206137. The next prime is 16206143. The reversal of 16206140 is 4160261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16206137) and next prime (16206143).

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 810307 = 16206140 / (1 + 6 + 2 + 0 + 6 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16206143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405134 + ... + 405173.

It is an arithmetic number, because the mean of its divisors is an integer number (2836078).

Almost surely, 2^16206140 is an apocalyptic number.

16206140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16206140 is an abundant number, since it is smaller than the sum of its proper divisors (17826796).

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

16206140 is a wasteful number, since it uses less digits than its factorization.

16206140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810316 (or 810314 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16206140 is about 4025.6850348729. The cubic root of 16206140 is about 253.0617626920.

The spelling of 16206140 in words is "sixteen million, two hundred six thousand, one hundred forty".