21169162 has 8 divisors (see below), whose sum is σ = 36290016. Its totient is φ = 9072492.

The previous prime is 21169157. The next prime is 21169219. The reversal of 21169162 is 26196112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21169162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756028 + ... + 756055.

It is an arithmetic number, because the mean of its divisors is an integer number (4536252).

Almost surely, 2^21169162 is an apocalyptic number.

21169162 is a deficient number, since it is larger than the sum of its proper divisors (15120854).

21169162 is a wasteful number, since it uses less digits than its factorization.

21169162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512092.

The product of its digits is 1296, while the sum is 28.

The square root of 21169162 is about 4600.9957617890. The cubic root of 21169162 is about 276.6312391533.

The spelling of 21169162 in words is "twenty-one million, one hundred sixty-nine thousand, one hundred sixty-two".