20948886 has 48 divisors (see below), whose sum is σ = 52869024. Its totient is φ = 5870592.

The previous prime is 20948881. The next prime is 20948891. The reversal of 20948886 is 68884902.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20948881) and next prime (20948891).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20948881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5110 + ... + 8246.

It is an arithmetic number, because the mean of its divisors is an integer number (1101438).

Almost surely, 2^20948886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20948886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26434512).

20948886 is an abundant number, since it is smaller than the sum of its proper divisors (31920138).

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

20948886 is a wasteful number, since it uses less digits than its factorization.

20948886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3202 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 20948886 is about 4576.9953025975. The cubic root of 20948886 is about 275.6683950679.

The spelling of 20948886 in words is "twenty million, nine hundred forty-eight thousand, eight hundred eighty-six".