20950110 has 64 divisors (see below), whose sum is σ = 57692160. Its totient is φ = 5404320.

The previous prime is 20950099. The next prime is 20950147. The reversal of 20950110 is 1105902.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7119 + ... + 9621.

It is an arithmetic number, because the mean of its divisors is an integer number (901440).

Almost surely, 2^20950110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20950110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28846080).

20950110 is an abundant number, since it is smaller than the sum of its proper divisors (36742050).

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

20950110 is a wasteful number, since it uses less digits than its factorization.

20950110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550 (or 2544 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 20950110 is about 4577.1290128202. The cubic root of 20950110 is about 275.6737638743.

The spelling of 20950110 in words is "twenty million, nine hundred fifty thousand, one hundred ten".