20938700 has 36 divisors (see below), whose sum is σ = 46554312. Its totient is φ = 8169600.

The previous prime is 20938693. The next prime is 20938739. The reversal of 20938700 is 783902.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1547 + ... + 6653.

Almost surely, 2^20938700 is an apocalyptic number.

20938700 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 20938700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23277156).

20938700 is an abundant number, since it is smaller than the sum of its proper divisors (25615612).

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

20938700 is a wasteful number, since it uses less digits than its factorization.

20938700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162 (or 5155 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20938700 is about 4575.8824285595. The cubic root of 20938700 is about 275.6237083082.

The spelling of 20938700 in words is "twenty million, nine hundred thirty-eight thousand, seven hundred".