21246010 has 8 divisors (see below), whose sum is σ = 38242836. Its totient is φ = 8498400.

The previous prime is 21245981. The next prime is 21246053. The reversal of 21246010 is 1064212.

It can be written as a sum of positive squares in 2 ways, for example, as 19105641 + 2140369 = 4371^2 + 1463^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062291 + ... + 1062310.

Almost surely, 2^21246010 is an apocalyptic number.

21246010 is a deficient number, since it is larger than the sum of its proper divisors (16996826).

21246010 is a wasteful number, since it uses less digits than its factorization.

21246010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124608.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21246010 is about 4609.3394320662. The cubic root of 21246010 is about 276.9655758809.

The spelling of 21246010 in words is "twenty-one million, two hundred forty-six thousand, ten".