20948312 has 64 divisors (see below), whose sum is σ = 50595840. Its totient is φ = 7891200.

The previous prime is 20948261. The next prime is 20948321. The reversal of 20948312 is 21384902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18548 + ... + 19644.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 2^20948312 is an apocalyptic number.

20948312 is a gapful number since it is divisible by the number (22) 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 20948312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25297920).

20948312 is an abundant number, since it is smaller than the sum of its proper divisors (29647528).

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

20948312 is a wasteful number, since it uses less digits than its factorization.

20948312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20948312 is about 4576.9325972752. The cubic root of 20948312 is about 275.6658772712.

The spelling of 20948312 in words is "twenty million, nine hundred forty-eight thousand, three hundred twelve".