20029800 has 192 divisors, whose sum is σ = 74995200. Its totient is φ = 4320000.

The previous prime is 20029783. The next prime is 20029831. The reversal of 20029800 is 892002.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79675 + ... + 79925.

It is an arithmetic number, because the mean of its divisors is an integer number (390600).

Almost surely, 2^20029800 is an apocalyptic number.

20029800 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 20029800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37497600).

20029800 is an abundant number, since it is smaller than the sum of its proper divisors (54965400).

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

20029800 is a wasteful number, since it uses less digits than its factorization.

20029800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20029800 is about 4475.4664561362. The cubic root of 20029800 is about 271.5765108312.

The spelling of 20029800 in words is "twenty million, twenty-nine thousand, eight hundred".