20726168 has 8 divisors (see below), whose sum is σ = 38861580. Its totient is φ = 10363080.

The previous prime is 20726149. The next prime is 20726171. The reversal of 20726168 is 86162702.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295378 + ... + 1295393.

Almost surely, 2^20726168 is an apocalyptic number.

It is an amenable number.

20726168 is a deficient number, since it is larger than the sum of its proper divisors (18135412).

20726168 is a wasteful number, since it uses less digits than its factorization.

20726168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590777 (or 2590773 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 20726168 is about 4552.6001361859. The cubic root of 20726168 is about 274.6879899345.

The spelling of 20726168 in words is "twenty million, seven hundred twenty-six thousand, one hundred sixty-eight".