20623600 has 60 divisors (see below), whose sum is σ = 50648544. Its totient is φ = 8066560.

The previous prime is 20623579. The next prime is 20623609. The reversal of 20623600 is 632602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18252 + ... + 19348.

Almost surely, 2^20623600 is an apocalyptic number.

20623600 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 20623600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25324272).

20623600 is an abundant number, since it is smaller than the sum of its proper divisors (30024944).

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

20623600 is a wasteful number, since it uses less digits than its factorization.

20623600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20623600 is about 4541.3213936034. The cubic root of 20623600 is about 274.2341224476.

The spelling of 20623600 in words is "twenty million, six hundred twenty-three thousand, six hundred".