212772857 has 8 divisors (see below), whose sum is σ = 233089920. Its totient is φ = 192618160.

The previous prime is 212772853. The next prime is 212772869. The reversal of 212772857 is 758277212.

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 212772857 - 2² = 212772853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212772851) 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, 37838 + ... + 43095.

It is an arithmetic number, because the mean of its divisors is an integer number (29136240).

Almost surely, 2^212772857 is an apocalyptic number.

It is an amenable number.

212772857 is a deficient number, since it is larger than the sum of its proper divisors (20317063).

212772857 is a wasteful number, since it uses less digits than its factorization.

212772857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81183.

The product of its digits is 109760, while the sum is 41.

The square root of 212772857 is about 14586.7356526400. The cubic root of 212772857 is about 596.9968986780.

The spelling of 212772857 in words is "two hundred twelve million, seven hundred seventy-two thousand, eight hundred fifty-seven".