20723368 has 48 divisors (see below), whose sum is σ = 42179040. Its totient is φ = 9525120.

The previous prime is 20723317. The next prime is 20723393. The reversal of 20723368 is 86332702.

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, 309271 + ... + 309337.

It is an arithmetic number, because the mean of its divisors is an integer number (878730).

Almost surely, 2^20723368 is an apocalyptic number.

It is an amenable number.

20723368 is an abundant number, since it is smaller than the sum of its proper divisors (21455672).

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

20723368 is a wasteful number, since it uses less digits than its factorization.

20723368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20723368 is about 4552.2926092245. The cubic root of 20723368 is about 274.6756197268.

The spelling of 20723368 in words is "twenty million, seven hundred twenty-three thousand, three hundred sixty-eight".