20723346 has 24 divisors (see below), whose sum is σ = 51315264. Its totient is φ = 5920920.

The previous prime is 20723317. The next prime is 20723393. The reversal of 20723346 is 64332702.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82110 + ... + 82361.

It is an arithmetic number, because the mean of its divisors is an integer number (2138136).

Almost surely, 2^20723346 is an apocalyptic number.

20723346 is an abundant number, since it is smaller than the sum of its proper divisors (30591918).

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

20723346 is a wasteful number, since it uses less digits than its factorization.

20723346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164486 (or 164483 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 20723346 is about 4552.2901928590. The cubic root of 20723346 is about 274.6755225279.

The spelling of 20723346 in words is "twenty million, seven hundred twenty-three thousand, three hundred forty-six".