212982045 has 16 divisors (see below), whose sum is σ = 340955520. Its totient is φ = 113529024.

The previous prime is 212982043. The next prime is 212982071. The reversal of 212982045 is 540289212.

It is not a de Polignac number, because 212982045 - 2¹ = 212982043 is a prime.

It is a super-2 number, since 2×212982045² = 90722702984764050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212981997 and 212982015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212982043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44352 + ... + 48918.

It is an arithmetic number, because the mean of its divisors is an integer number (21309720).

Almost surely, 2^212982045 is an apocalyptic number.

It is an amenable number.

212982045 is a deficient number, since it is larger than the sum of its proper divisors (127973475).

212982045 is a wasteful number, since it uses less digits than its factorization.

212982045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 212982045 is about 14593.9043781985. The cubic root of 212982045 is about 597.1924807720.

The spelling of 212982045 in words is "two hundred twelve million, nine hundred eighty-two thousand, forty-five".