20035988280 has 960 divisors, whose sum is σ = 86902200000. Its totient is φ = 4135380480.

The previous prime is 20035988279. The next prime is 20035988327. The reversal of 20035988280 is 8288953002.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 134469646 + ... + 134469794.

It is an arithmetic number, because the mean of its divisors is an integer number (90523125).

Almost surely, 2^20035988280 is an apocalyptic number.

20035988280 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 20035988280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43451100000).

20035988280 is an abundant number, since it is smaller than the sum of its proper divisors (66866211720).

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

20035988280 is a wasteful number, since it uses less digits than its factorization.

20035988280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 20035988280 in words is "twenty billion, thirty-five million, nine hundred eighty-eight thousand, two hundred eighty".