212291673 has 32 divisors (see below), whose sum is σ = 314979840. Its totient is φ = 126109440.

The previous prime is 212291671. The next prime is 212291683. The reversal of 212291673 is 376192212.

It is not a de Polignac number, because 212291673 - 2¹ = 212291671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (212291671) 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 31 ways as a sum of consecutive naturals, for example, 490065 + ... + 490497.

It is an arithmetic number, because the mean of its divisors is an integer number (9843120).

Almost surely, 2^212291673 is an apocalyptic number.

It is an amenable number.

212291673 is a deficient number, since it is larger than the sum of its proper divisors (102688167).

212291673 is a wasteful number, since it uses less digits than its factorization.

212291673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709.

The product of its digits is 9072, while the sum is 33.

The square root of 212291673 is about 14570.2324277961. The cubic root of 212291673 is about 596.5465245378.

The spelling of 212291673 in words is "two hundred twelve million, two hundred ninety-one thousand, six hundred seventy-three".