21060346 has 16 divisors (see below), whose sum is σ = 32871168. Its totient is φ = 10108800.

The previous prime is 21060329. The next prime is 21060359. The reversal of 21060346 is 64306012.

It is a zygodrome in base 4.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6826 + ... + 9418.

It is an arithmetic number, because the mean of its divisors is an integer number (2054448).

Almost surely, 2^21060346 is an apocalyptic number.

21060346 is a deficient number, since it is larger than the sum of its proper divisors (11810822).

21060346 is a wasteful number, since it uses less digits than its factorization.

21060346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 21060346 is about 4589.1552599580. The cubic root of 21060346 is about 276.1564348066.

Adding to 21060346 its reverse (64306012), we get a palindrome (85366358).

The spelling of 21060346 in words is "twenty-one million, sixty thousand, three hundred forty-six".