21049162 has 16 divisors (see below), whose sum is σ = 34064712. Its totient is φ = 9717760.

The previous prime is 21049153. The next prime is 21049177. The reversal of 21049162 is 26194012.

It can be written as a sum of positive squares in 4 ways, for example, as 20711601 + 337561 = 4551^2 + 581^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4039 + ... + 7642.

Almost surely, 2^21049162 is an apocalyptic number.

21049162 is a deficient number, since it is larger than the sum of its proper divisors (13015550).

21049162 is a wasteful number, since it uses less digits than its factorization.

21049162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11753.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 21049162 is about 4587.9365732320. The cubic root of 21049162 is about 276.1075422821.

The spelling of 21049162 in words is "twenty-one million, forty-nine thousand, one hundred sixty-two".