20898000 has 240 divisors, whose sum is σ = 77453376. Its totient is φ = 5443200.

The previous prime is 20897993. The next prime is 20898041. The reversal of 20898000 is 89802.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 485979 + ... + 486021.

Almost surely, 2^20898000 is an apocalyptic number.

20898000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20898000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38726688).

20898000 is an abundant number, since it is smaller than the sum of its proper divisors (56555376).

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

20898000 is an equidigital number, since it uses as much as digits as its factorization.

20898000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 20898000 is about 4571.4330357121. The cubic root of 20898000 is about 275.4450095174.

The spelling of 20898000 in words is "twenty million, eight hundred ninety-eight thousand".