20498930 has 8 divisors (see below), whose sum is σ = 36898092. Its totient is φ = 8199568.

The previous prime is 20498927. The next prime is 20498941. The reversal of 20498930 is 3989402.

It can be written as a sum of positive squares in 2 ways, for example, as 19598329 + 900601 = 4427^2 + 949^2 .

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

It is a super-2 number, since 2×20498930² = 840412262289800, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1024937 + ... + 1024956.

Almost surely, 2^20498930 is an apocalyptic number.

20498930 is a deficient number, since it is larger than the sum of its proper divisors (16399162).

20498930 is a wasteful number, since it uses less digits than its factorization.

20498930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049900.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20498930 is about 4527.5744057939. The cubic root of 20498930 is about 273.6804219799.

The spelling of 20498930 in words is "twenty million, four hundred ninety-eight thousand, nine hundred thirty".