20493898 has 8 divisors (see below), whose sum is σ = 30900708. Its totient is φ = 10193664.

The previous prime is 20493877. The next prime is 20493901. The reversal of 20493898 is 89839402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20493729 + 169 = 4527^2 + 13^2 .

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

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, 26161 + ... + 26932.

Almost surely, 2^20493898 is an apocalyptic number.

20493898 is a deficient number, since it is larger than the sum of its proper divisors (10406810).

20493898 is a wasteful number, since it uses less digits than its factorization.

20493898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53288.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 20493898 is about 4527.0186657446. The cubic root of 20493898 is about 273.6580261348.

The spelling of 20493898 in words is "twenty million, four hundred ninety-three thousand, eight hundred ninety-eight".