21016362 has 8 divisors (see below), whose sum is σ = 42032736. Its totient is φ = 7005452.

The previous prime is 21016309. The next prime is 21016381. The reversal of 21016362 is 26361012.

It is a happy number.

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

21016362 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1751358 + ... + 1751369.

It is an arithmetic number, because the mean of its divisors is an integer number (5254092).

Almost surely, 2^21016362 is an apocalyptic number.

21016362 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21016362 is a wasteful number, since it uses less digits than its factorization.

21016362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502732.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 21016362 is about 4584.3605879119. The cubic root of 21016362 is about 275.9640522390.

Adding to 21016362 its reverse (26361012), we get a palindrome (47377374).

The spelling of 21016362 in words is "twenty-one million, sixteen thousand, three hundred sixty-two".