21086362 has 16 divisors (see below), whose sum is σ = 35240832. Its totient is φ = 9380320.

The previous prime is 21086347. The next prime is 21086381. The reversal of 21086362 is 26368012.

It is a self number, because there is not a number n which added to its sum of digits gives 21086362.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9163 + ... + 11230.

It is an arithmetic number, because the mean of its divisors is an integer number (2202552).

Almost surely, 2^21086362 is an apocalyptic number.

21086362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21086362 is a deficient number, since it is larger than the sum of its proper divisors (14154470).

21086362 is a wasteful number, since it uses less digits than its factorization.

21086362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20453.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 21086362 is about 4591.9888937148. The cubic root of 21086362 is about 276.2701007056.

It can be divided in two parts, 210863 and 62, that added together give a triangular number (210925 = T₆₄₉).

The spelling of 21086362 in words is "twenty-one million, eighty-six thousand, three hundred sixty-two".