20963340 has 48 divisors (see below), whose sum is σ = 65220960. Its totient is φ = 5590080.

The previous prime is 20963339. The next prime is 20963353. The reversal of 20963340 is 4336902.

20963340 is a `hidden beast` number, since 20 + 9 + 633 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 18871 + ... + 19950.

It is an arithmetic number, because the mean of its divisors is an integer number (1358770).

Almost surely, 2^20963340 is an apocalyptic number.

20963340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20963340 is an abundant number, since it is smaller than the sum of its proper divisors (44257620).

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

20963340 is a wasteful number, since it uses less digits than its factorization.

20963340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38839 (or 38831 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20963340 is about 4578.5740138170. The cubic root of 20963340 is about 275.7317810150.

The spelling of 20963340 in words is "twenty million, nine hundred sixty-three thousand, three hundred forty".