20716548 has 12 divisors (see below), whose sum is σ = 48338640. Its totient is φ = 6905512.

The previous prime is 20716543. The next prime is 20716561. The reversal of 20716548 is 84561702.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20716548² = 858350722072608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20716541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863178 + ... + 863201.

It is an arithmetic number, because the mean of its divisors is an integer number (4028220).

Almost surely, 2^20716548 is an apocalyptic number.

It is an amenable number.

20716548 is an abundant number, since it is smaller than the sum of its proper divisors (27622092).

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

20716548 is a wasteful number, since it uses less digits than its factorization.

20716548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726386 (or 1726384 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20716548 is about 4551.5434744711. The cubic root of 20716548 is about 274.6454847722.

The spelling of 20716548 in words is "twenty million, seven hundred sixteen thousand, five hundred forty-eight".