20498898 has 16 divisors (see below), whose sum is σ = 46854720. Its totient is φ = 5856816.

The previous prime is 20498897. The next prime is 20498903. The reversal of 20498898 is 89889402.

It is not an unprimeable number, because it can be changed into a prime (20498897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243993 + ... + 244076.

It is an arithmetic number, because the mean of its divisors is an integer number (2928420).

Almost surely, 2^20498898 is an apocalyptic number.

20498898 is an abundant number, since it is smaller than the sum of its proper divisors (26355822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20498898 is a wasteful number, since it uses less digits than its factorization.

20498898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488081.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 20498898 is about 4527.5708718915. The cubic root of 20498898 is about 273.6802795696.

The spelling of 20498898 in words is "twenty million, four hundred ninety-eight thousand, eight hundred ninety-eight".