21063148 has 6 divisors (see below), whose sum is σ = 36860516. Its totient is φ = 10531572.

The previous prime is 21063137. The next prime is 21063149. The reversal of 21063148 is 84136012.

It is not an unprimeable number, because it can be changed into a prime (21063149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2632890 + ... + 2632897.

Almost surely, 2^21063148 is an apocalyptic number.

It is an amenable number.

21063148 is a deficient number, since it is larger than the sum of its proper divisors (15797368).

21063148 is a wasteful number, since it uses less digits than its factorization.

21063148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265791 (or 5265789 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21063148 is about 4589.4605347470. The cubic root of 21063148 is about 276.1686814559.

The spelling of 21063148 in words is "twenty-one million, sixty-three thousand, one hundred forty-eight".