21119862 has 16 divisors (see below), whose sum is σ = 42342912. Its totient is φ = 7022760.

The previous prime is 21119827. The next prime is 21119863. The reversal of 21119862 is 26891112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21119863) 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, 1498 + ... + 6669.

It is an arithmetic number, because the mean of its divisors is an integer number (2646432).

Almost surely, 2^21119862 is an apocalyptic number.

21119862 is an abundant number, since it is smaller than the sum of its proper divisors (21223050).

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

21119862 is a wasteful number, since it uses less digits than its factorization.

21119862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603.

The product of its digits is 1728, while the sum is 30.

The square root of 21119862 is about 4595.6351030081. The cubic root of 21119862 is about 276.4163271547.

The spelling of 21119862 in words is "twenty-one million, one hundred nineteen thousand, eight hundred sixty-two".