164215412 has 12 divisors (see below), whose sum is σ = 292799556. Its totient is φ = 80558400.

The previous prime is 164215399. The next prime is 164215421. The reversal of 164215412 is 214512461.

It can be written as a sum of positive squares in 2 ways, for example, as 142181776 + 22033636 = 11924^2 + 4694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387089 + ... + 387512.

It is an arithmetic number, because the mean of its divisors is an integer number (24399963).

Almost surely, 2^164215412 is an apocalyptic number.

It is an amenable number.

164215412 is a deficient number, since it is larger than the sum of its proper divisors (128584144).

164215412 is a wasteful number, since it uses less digits than its factorization.

164215412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774658 (or 774656 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 164215412 is about 12814.6561405291. The cubic root of 164215412 is about 547.6099173960.

Adding to 164215412 its reverse (214512461), we get a palindrome (378727873).

The spelling of 164215412 in words is "one hundred sixty-four million, two hundred fifteen thousand, four hundred twelve".