20598851 has 16 divisors (see below), whose sum is σ = 25975488. Its totient is φ = 15897600.

The previous prime is 20598841. The next prime is 20598859. The reversal of 20598851 is 15889502.

It is a cyclic number.

It is not a de Polignac number, because 20598851 - 2¹⁰ = 20597827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20598859) 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, 971 + ... + 6491.

It is an arithmetic number, because the mean of its divisors is an integer number (1623468).

Almost surely, 2^20598851 is an apocalyptic number.

20598851 is a deficient number, since it is larger than the sum of its proper divisors (5376637).

20598851 is a wasteful number, since it uses less digits than its factorization.

20598851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5582.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 20598851 is about 4538.5957079255. The cubic root of 20598851 is about 274.1243818754.

The spelling of 20598851 in words is "twenty million, five hundred ninety-eight thousand, eight hundred fifty-one".