20950860 has 96 divisors (see below), whose sum is σ = 67963392. Its totient is φ = 4723200.

The previous prime is 20950849. The next prime is 20950871. The reversal of 20950860 is 6805902.

It is an interprime number because it is at equal distance from previous prime (20950849) and next prime (20950871).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 34560 + ... + 35160.

It is an arithmetic number, because the mean of its divisors is an integer number (707952).

Almost surely, 2^20950860 is an apocalyptic number.

20950860 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 20950860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33981696).

20950860 is an abundant number, since it is smaller than the sum of its proper divisors (47012532).

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

20950860 is a wasteful number, since it uses less digits than its factorization.

20950860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20950860 is about 4577.2109411737. The cubic root of 20950860 is about 275.6770534809.

The spelling of 20950860 in words is "twenty million, nine hundred fifty thousand, eight hundred sixty".