20957098 has 8 divisors (see below), whose sum is σ = 31599108. Its totient is φ = 10424064.

The previous prime is 20957089. The next prime is 20957113. The reversal of 20957098 is 89075902.

It can be written as a sum of positive squares in 2 ways, for example, as 19686969 + 1270129 = 4437^2 + 1127^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20957098.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26761 + ... + 27532.

Almost surely, 2^20957098 is an apocalyptic number.

20957098 is a deficient number, since it is larger than the sum of its proper divisors (10642010).

20957098 is a wasteful number, since it uses less digits than its factorization.

20957098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54488.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 20957098 is about 4577.8923097862. The cubic root of 20957098 is about 275.7044111934.

The spelling of 20957098 in words is "twenty million, nine hundred fifty-seven thousand, ninety-eight".