20498608 has 40 divisors (see below), whose sum is σ = 43139600. Its totient is φ = 9379584.

The previous prime is 20498603. The next prime is 20498609. The reversal of 20498608 is 80689402.

It is not an unprimeable number, because it can be changed into a prime (20498603) 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, 28558 + ... + 29266.

It is an arithmetic number, because the mean of its divisors is an integer number (1078490).

Almost surely, 2^20498608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20498608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21569800).

20498608 is an abundant number, since it is smaller than the sum of its proper divisors (22640992).

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

20498608 is a wasteful number, since it uses less digits than its factorization.

20498608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20498608 is about 4527.5388457748. The cubic root of 20498608 is about 273.6789889692.

The spelling of 20498608 in words is "twenty million, four hundred ninety-eight thousand, six hundred eight".