20242851280 has 80 divisors (see below), whose sum is σ = 48259411200. Its totient is φ = 7891973120.

The previous prime is 20242851257. The next prime is 20242851347. The reversal of 20242851280 is 8215824202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4323981 + ... + 4328659.

It is an arithmetic number, because the mean of its divisors is an integer number (603242640).

Almost surely, 2^20242851280 is an apocalyptic number.

20242851280 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 20242851280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24129705600).

20242851280 is an abundant number, since it is smaller than the sum of its proper divisors (28016559920).

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

20242851280 is a wasteful number, since it uses less digits than its factorization.

20242851280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052 (or 6046 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The spelling of 20242851280 in words is "twenty billion, two hundred forty-two million, eight hundred fifty-one thousand, two hundred eighty".