20498236 has 24 divisors (see below), whose sum is σ = 39521664. Its totient is φ = 9224880.

The previous prime is 20498201. The next prime is 20498239. The reversal of 20498236 is 63289402.

It is a super-2 number, since 2×20498236² = 840355358223392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20498239) 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 7 ways as a sum of consecutive naturals, for example, 2271 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (1646736).

Almost surely, 2^20498236 is an apocalyptic number.

It is an amenable number.

20498236 is a deficient number, since it is larger than the sum of its proper divisors (19023428).

20498236 is a wasteful number, since it uses less digits than its factorization.

20498236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641 (or 4639 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20498236 is about 4527.4977636659. The cubic root of 20498236 is about 273.6773334226.

The spelling of 20498236 in words is "twenty million, four hundred ninety-eight thousand, two hundred thirty-six".