212263728 has 40 divisors (see below), whose sum is σ = 558700848. Its totient is φ = 69418752.

The previous prime is 212263693. The next prime is 212263729. The reversal of 212263728 is 827362212.

It is not an unprimeable number, because it can be changed into a prime (212263729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39175 + ... + 44262.

Almost surely, 2^212263728 is an apocalyptic number.

It is an amenable number.

212263728 is an abundant number, since it is smaller than the sum of its proper divisors (346437120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212263728 is a wasteful number, since it uses less digits than its factorization.

212263728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83501 (or 83495 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 212263728 is about 14569.2734204558. The cubic root of 212263728 is about 596.5203479354.

The spelling of 212263728 in words is "two hundred twelve million, two hundred sixty-three thousand, seven hundred twenty-eight".