212732857 has 8 divisors (see below), whose sum is σ = 218244096. Its totient is φ = 207262752.

The previous prime is 212732851. The next prime is 212732867. The reversal of 212732857 is 758237212.

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

It is a cyclic number.

It is not a de Polignac number, because 212732857 - 2²³ = 204344249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212732851) 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, 333 + ... + 20629.

It is an arithmetic number, because the mean of its divisors is an integer number (27280512).

Almost surely, 2^212732857 is an apocalyptic number.

It is an amenable number.

212732857 is a deficient number, since it is larger than the sum of its proper divisors (5511239).

212732857 is a wasteful number, since it uses less digits than its factorization.

212732857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20567.

The product of its digits is 47040, while the sum is 37.

The square root of 212732857 is about 14585.3644795048. The cubic root of 212732857 is about 596.9594857409.

The spelling of 212732857 in words is "two hundred twelve million, seven hundred thirty-two thousand, eight hundred fifty-seven".