20963250 has 192 divisors, whose sum is σ = 71255808. Its totient is φ = 4356000.

The previous prime is 20963219. The next prime is 20963273. The reversal of 20963250 is 5236902.

20963250 is a `hidden beast` number, since 20 + 9 + 632 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1905745 + ... + 1905755.

It is an arithmetic number, because the mean of its divisors is an integer number (371124).

Almost surely, 2^20963250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20963250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35627904).

20963250 is an abundant number, since it is smaller than the sum of its proper divisors (50292558).

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

20963250 is a wasteful number, since it uses less digits than its factorization.

20963250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20963250 is about 4578.5641854188. The cubic root of 20963250 is about 275.7313864231.

The spelling of 20963250 in words is "twenty million, nine hundred sixty-three thousand, two hundred fifty".