220000857 has 8 divisors (see below), whose sum is σ = 300156384. Its totient is φ = 143256288.

The previous prime is 220000841. The next prime is 220000871. The reversal of 220000857 is 758000022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220000857 - 2⁴ = 220000841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220000817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852588 + ... + 852845.

It is an arithmetic number, because the mean of its divisors is an integer number (37519548).

Almost surely, 2^220000857 is an apocalyptic number.

It is an amenable number.

220000857 is a deficient number, since it is larger than the sum of its proper divisors (80155527).

220000857 is a wasteful number, since it uses less digits than its factorization.

220000857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705479.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 220000857 is about 14832.4258636273. The cubic root of 220000857 is about 603.6818575495.

Adding to 220000857 its reverse (758000022), we get a palindrome (978000879).

The spelling of 220000857 in words is "two hundred twenty million, eight hundred fifty-seven", and thus it is an aban number.