212645433 has 64 divisors (see below), whose sum is σ = 383846400. Its totient is φ = 101724480.

The previous prime is 212645431. The next prime is 212645453. The reversal of 212645433 is 334546212.

It is not a de Polignac number, because 212645433 - 2¹ = 212645431 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 212645433.

It is not an unprimeable number, because it can be changed into a prime (212645431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 507298 + ... + 507716.

It is an arithmetic number, because the mean of its divisors is an integer number (5997600).

Almost surely, 2^212645433 is an apocalyptic number.

It is an amenable number.

212645433 is a deficient number, since it is larger than the sum of its proper divisors (171200967).

212645433 is a wasteful number, since it uses less digits than its factorization.

212645433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 453 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 212645433 is about 14582.3671946636. The cubic root of 212645433 is about 596.8776996963.

The spelling of 212645433 in words is "two hundred twelve million, six hundred forty-five thousand, four hundred thirty-three".