212728774 has 16 divisors (see below), whose sum is σ = 321128496. Its totient is φ = 105688800.

The previous prime is 212728759. The next prime is 212728823. The reversal of 212728774 is 477827212.

It is a congruent number.

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, 392944 + ... + 393484.

It is an arithmetic number, because the mean of its divisors is an integer number (20070531).

Almost surely, 2^212728774 is an apocalyptic number.

212728774 is a deficient number, since it is larger than the sum of its proper divisors (108399722).

212728774 is a wasteful number, since it uses less digits than its factorization.

212728774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431.

The product of its digits is 87808, while the sum is 40.

The square root of 212728774 is about 14585.2245097564. The cubic root of 212728774 is about 596.9556665516.

The spelling of 212728774 in words is "two hundred twelve million, seven hundred twenty-eight thousand, seven hundred seventy-four".