20622300 has 72 divisors (see below), whose sum is σ = 60839856. Its totient is φ = 5391360.

The previous prime is 20622299. The next prime is 20622311. The reversal of 20622300 is 322602.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20622300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15252 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (844998).

Almost surely, 2^20622300 is an apocalyptic number.

20622300 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 20622300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30419928).

20622300 is an abundant number, since it is smaller than the sum of its proper divisors (40217556).

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

20622300 is a wasteful number, since it uses less digits than its factorization.

20622300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20622300 is about 4541.1782612005. The cubic root of 20622300 is about 274.2283602487.

Adding to 20622300 its reverse (322602), we get a palindrome (20944902).

The spelling of 20622300 in words is "twenty million, six hundred twenty-two thousand, three hundred".