21093148 has 6 divisors (see below), whose sum is σ = 36913016. Its totient is φ = 10546572.

The previous prime is 21093119. The next prime is 21093151. The reversal of 21093148 is 84139012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2636640 + ... + 2636647.

Almost surely, 2^21093148 is an apocalyptic number.

It is an amenable number.

21093148 is a deficient number, since it is larger than the sum of its proper divisors (15819868).

21093148 is a wasteful number, since it uses less digits than its factorization.

21093148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273291 (or 5273289 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 21093148 is about 4592.7277297920. The cubic root of 21093148 is about 276.2997338848.

The spelling of 21093148 in words is "twenty-one million, ninety-three thousand, one hundred forty-eight".