211072650 has 24 divisors (see below), whose sum is σ = 523460544. Its totient is φ = 56286000.

The previous prime is 211072649. The next prime is 211072657. The reversal of 211072650 is 56270112.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211072650.

It is not an unprimeable number, because it can be changed into a prime (211072657) 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 11 ways as a sum of consecutive naturals, for example, 703426 + ... + 703725.

It is an arithmetic number, because the mean of its divisors is an integer number (21810856).

Almost surely, 2^211072650 is an apocalyptic number.

211072650 is an abundant number, since it is smaller than the sum of its proper divisors (312387894).

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

211072650 is a wasteful number, since it uses less digits than its factorization.

211072650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407166 (or 1407161 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 211072650 is about 14528.3395472435. The cubic root of 211072650 is about 595.4025005323.

The spelling of 211072650 in words is "two hundred eleven million, seventy-two thousand, six hundred fifty".