20168137 has 16 divisors (see below), whose sum is σ = 24105600. Its totient is φ = 16656640.

The previous prime is 20168129. The next prime is 20168149. The reversal of 20168137 is 73186102.

It is not a de Polignac number, because 20168137 - 2³ = 20168129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20168117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3564 + ... + 7282.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^20168137 is an apocalyptic number.

It is an amenable number.

20168137 is a deficient number, since it is larger than the sum of its proper divisors (3937463).

20168137 is a wasteful number, since it uses less digits than its factorization.

20168137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 20168137 is about 4490.8948996831. The cubic root of 20168137 is about 272.2002967085.

It can be divided in two parts, 2016 and 8137, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 20168137 in words is "twenty million, one hundred sixty-eight thousand, one hundred thirty-seven".