21030596 has 12 divisors (see below), whose sum is σ = 37073148. Its totient is φ = 10438272.

The previous prime is 21030589. The next prime is 21030613. The reversal of 21030596 is 69503012.

It can be written as a sum of positive squares in 2 ways, for example, as 4056196 + 16974400 = 2014^2 + 4120^2 .

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, 18641 + ... + 19736.

It is an arithmetic number, because the mean of its divisors is an integer number (3089429).

Almost surely, 2^21030596 is an apocalyptic number.

It is an amenable number.

21030596 is a deficient number, since it is larger than the sum of its proper divisors (16042552).

21030596 is a wasteful number, since it uses less digits than its factorization.

21030596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38518 (or 38516 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 21030596 is about 4585.9127771906. The cubic root of 21030596 is about 276.0263399912.

The spelling of 21030596 in words is "twenty-one million, thirty thousand, five hundred ninety-six".