20762157 has 24 divisors (see below), whose sum is σ = 30966528. Its totient is φ = 12355200.

The previous prime is 20762141. The next prime is 20762177. The reversal of 20762157 is 75126702.

It is not a de Polignac number, because 20762157 - 2⁴ = 20762141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20762177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15057 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (1290272).

Almost surely, 2^20762157 is an apocalyptic number.

It is an amenable number.

20762157 is a deficient number, since it is larger than the sum of its proper divisors (10204371).

20762157 is a wasteful number, since it uses less digits than its factorization.

20762157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 20762157 is about 4556.5509982881. The cubic root of 20762157 is about 274.8468877700.

Adding to 20762157 its reverse (75126702), we get a palindrome (95888859).

The spelling of 20762157 in words is "twenty million, seven hundred sixty-two thousand, one hundred fifty-seven".