20846269400 has 96 divisors (see below), whose sum is σ = 53770219200. Its totient is φ = 7451932800.

The previous prime is 20846269399. The next prime is 20846269421. The reversal of 20846269400 is 496264802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49499 + ... + 210101.

It is an arithmetic number, because the mean of its divisors is an integer number (560106450).

Almost surely, 2^20846269400 is an apocalyptic number.

20846269400 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 20846269400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26885109600).

20846269400 is an abundant number, since it is smaller than the sum of its proper divisors (32923949800).

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

20846269400 is a wasteful number, since it uses less digits than its factorization.

20846269400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160689 (or 160680 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 20846269400 in words is "twenty billion, eight hundred forty-six million, two hundred sixty-nine thousand, four hundred".