20898708480 has 704 divisors, whose sum is σ = 82947715200. Its totient is φ = 4954521600.

The previous prime is 20898708443. The next prime is 20898708487. The reversal of 20898708480 is 8480789802.

20898708480 is a `hidden beast` number, since 2 + 0 + 8 + 98 + 70 + 8 + 480 = 666.

It is a super-2 number, since 2×20898708480² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898708487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52116280 + ... + 52116680.

Almost surely, 2^20898708480 is an apocalyptic number.

20898708480 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 20898708480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41473857600).

20898708480 is an abundant number, since it is smaller than the sum of its proper divisors (62049006720).

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

20898708480 is a wasteful number, since it uses less digits than its factorization.

20898708480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 20898708480 in words is "twenty billion, eight hundred ninety-eight million, seven hundred eight thousand, four hundred eighty".