20946360 has 64 divisors (see below), whose sum is σ = 66153600. Its totient is φ = 5291136.

The previous prime is 20946347. The next prime is 20946361. The reversal of 20946360 is 6364902.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20946361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (1033650).

Almost surely, 2^20946360 is an apocalyptic number.

20946360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20946360 is an abundant number, since it is smaller than the sum of its proper divisors (45207240).

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

20946360 is a wasteful number, since it uses less digits than its factorization.

20946360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220 (or 9216 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 20946360 is about 4576.7193490534. The cubic root of 20946360 is about 275.6573146639.

The spelling of 20946360 in words is "twenty million, nine hundred forty-six thousand, three hundred sixty".