21075162 has 16 divisors (see below), whose sum is σ = 42249600. Its totient is φ = 7008512.

The previous prime is 21075157. The next prime is 21075169. The reversal of 21075162 is 26157012.

It is not an unprimeable number, because it can be changed into a prime (21075169) by changing a digit.

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, 1218 + ... + 6605.

It is an arithmetic number, because the mean of its divisors is an integer number (2640600).

Almost surely, 2^21075162 is an apocalyptic number.

21075162 is an abundant number, since it is smaller than the sum of its proper divisors (21174438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21075162 is a wasteful number, since it uses less digits than its factorization.

21075162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8277.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 21075162 is about 4590.7692165910. The cubic root of 21075162 is about 276.2211785141.

The spelling of 21075162 in words is "twenty-one million, seventy-five thousand, one hundred sixty-two".