20957126 has 8 divisors (see below), whose sum is σ = 31459584. Its totient is φ = 10470600.

The previous prime is 20957113. The next prime is 20957129. The reversal of 20957126 is 62175902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20957126² = 878402260359752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20957092 and 20957101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20957129) 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, 176 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (3932448).

Almost surely, 2^20957126 is an apocalyptic number.

20957126 is a deficient number, since it is larger than the sum of its proper divisors (10502458).

20957126 is a wasteful number, since it uses less digits than its factorization.

20957126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 20957126 is about 4577.8953679611. The cubic root of 20957126 is about 275.7045339794.

The spelling of 20957126 in words is "twenty million, nine hundred fifty-seven thousand, one hundred twenty-six".