212039028 has 36 divisors (see below), whose sum is σ = 567517860. Its totient is φ = 66521856.

The previous prime is 212039017. The next prime is 212039057. The reversal of 212039028 is 820930212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 154703844 + 57335184 = 12438^2 + 7572^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 212038992 and 212039010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172623 + ... + 173846.

It is an arithmetic number, because the mean of its divisors is an integer number (15764385).

Almost surely, 2^212039028 is an apocalyptic number.

It is an amenable number.

212039028 is an abundant number, since it is smaller than the sum of its proper divisors (355478832).

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

212039028 is a wasteful number, since it uses less digits than its factorization.

212039028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346496 (or 346491 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 212039028 is about 14561.5599439071. The cubic root of 212039028 is about 596.3097837027.

The spelling of 212039028 in words is "two hundred twelve million, thirty-nine thousand, twenty-eight".