20267348880 has 160 divisors (see below), whose sum is σ = 63813058560. Its totient is φ = 5320373760.

The previous prime is 20267348873. The next prime is 20267348891. The reversal of 20267348880 is 8884376202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7260285 + ... + 7263075.

It is an arithmetic number, because the mean of its divisors is an integer number (398831616).

Almost surely, 2^20267348880 is an apocalyptic number.

20267348880 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 20267348880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31906529280).

20267348880 is an abundant number, since it is smaller than the sum of its proper divisors (43545709680).

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

20267348880 is a wasteful number, since it uses less digits than its factorization.

20267348880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 20267348880 in words is "twenty billion, two hundred sixty-seven million, three hundred forty-eight thousand, eight hundred eighty".