20132157 has 16 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 13058352.

The previous prime is 20132149. The next prime is 20132173. The reversal of 20132157 is 75123102.

It is not a de Polignac number, because 20132157 - 2³ = 20132149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132117) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18408 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^20132157 is an apocalyptic number.

It is an amenable number.

20132157 is a deficient number, since it is larger than the sum of its proper divisors (7446723).

20132157 is a wasteful number, since it uses less digits than its factorization.

20132157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 20132157 is about 4486.8872283578. The cubic root of 20132157 is about 272.0383317158.

Adding to 20132157 its reverse (75123102), we get a palindrome (95255259).

The spelling of 20132157 in words is "twenty million, one hundred thirty-two thousand, one hundred fifty-seven".