20716460 has 24 divisors (see below), whose sum is σ = 45795120. Its totient is φ = 7850304.

The previous prime is 20716459. The next prime is 20716483. The reversal of 20716460 is 6461702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26879 + ... + 27638.

It is an arithmetic number, because the mean of its divisors is an integer number (1908130).

Almost surely, 2^20716460 is an apocalyptic number.

20716460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20716460 is an abundant number, since it is smaller than the sum of its proper divisors (25078660).

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

20716460 is a wasteful number, since it uses less digits than its factorization.

20716460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54545 (or 54543 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20716460 is about 4551.5338074104. The cubic root of 20716460 is about 274.6450958909.

The spelling of 20716460 in words is "twenty million, seven hundred sixteen thousand, four hundred sixty".