21602948 has 12 divisors (see below), whose sum is σ = 38094672. Its totient is φ = 10718760.

The previous prime is 21602923. The next prime is 21602951. The reversal of 21602948 is 84920612.

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, 20090 + ... + 21137.

It is an arithmetic number, because the mean of its divisors is an integer number (3174556).

Almost surely, 2^21602948 is an apocalyptic number.

It is an amenable number.

21602948 is a deficient number, since it is larger than the sum of its proper divisors (16491724).

21602948 is a wasteful number, since it uses less digits than its factorization.

21602948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41362 (or 41360 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 21602948 is about 4647.8971589311. The cubic root of 21602948 is about 278.5079992588.

The spelling of 21602948 in words is "twenty-one million, six hundred two thousand, nine hundred forty-eight".