20916068 has 24 divisors (see below), whose sum is σ = 37943640. Its totient is φ = 10081280.

The previous prime is 20916053. The next prime is 20916073. The reversal of 20916068 is 86061902.

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 20593444 = 568^2 + 4538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13880 + ... + 15312.

It is an arithmetic number, because the mean of its divisors is an integer number (1580985).

Almost surely, 2^20916068 is an apocalyptic number.

It is an amenable number.

20916068 is a deficient number, since it is larger than the sum of its proper divisors (17027572).

20916068 is a wasteful number, since it uses less digits than its factorization.

20916068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1565 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 20916068 is about 4573.4087943240. The cubic root of 20916068 is about 275.5243680981.

The spelling of 20916068 in words is "twenty million, nine hundred sixteen thousand, sixty-eight".