20293800 has 96 divisors (see below), whose sum is σ = 63612000. Its totient is φ = 5351680.

The previous prime is 20293799. The next prime is 20293813. The reversal of 20293800 is 839202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89287 + ... + 89513.

It is an arithmetic number, because the mean of its divisors is an integer number (662625).

Almost surely, 2^20293800 is an apocalyptic number.

20293800 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 20293800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31806000).

20293800 is an abundant number, since it is smaller than the sum of its proper divisors (43318200).

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

20293800 is a wasteful number, since it uses less digits than its factorization.

20293800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20293800 is about 4504.8640379039. The cubic root of 20293800 is about 272.7644656347.

The spelling of 20293800 in words is "twenty million, two hundred ninety-three thousand, eight hundred".