20838104280 has 512 divisors, whose sum is σ = 86966784000. Its totient is φ = 4327464960.

The previous prime is 20838104239. The next prime is 20838104293. The reversal of 20838104280 is 8240183802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3724285 + ... + 3729875.

It is an arithmetic number, because the mean of its divisors is an integer number (169857000).

Almost surely, 2^20838104280 is an apocalyptic number.

20838104280 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 20838104280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43483392000).

20838104280 is an abundant number, since it is smaller than the sum of its proper divisors (66128679720).

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

20838104280 is a wasteful number, since it uses less digits than its factorization.

20838104280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664 (or 5654 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 20838104280 in words is "twenty billion, eight hundred thirty-eight million, one hundred four thousand, two hundred eighty".