21119948 has 12 divisors (see below), whose sum is σ = 36992760. Its totient is φ = 10550592.

The previous prime is 21119947. The next prime is 21119953. The reversal of 21119948 is 84991112.

It is not an unprimeable number, because it can be changed into a prime (21119947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6083 + ... + 8901.

It is an arithmetic number, because the mean of its divisors is an integer number (3082730).

Almost surely, 2^21119948 is an apocalyptic number.

It is an amenable number.

21119948 is a deficient number, since it is larger than the sum of its proper divisors (15872812).

21119948 is a wasteful number, since it uses less digits than its factorization.

21119948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696 (or 4694 counting only the distinct ones).

The product of its digits is 5184, while the sum is 35.

The square root of 21119948 is about 4595.6444597031. The cubic root of 21119948 is about 276.4167023429.

The spelling of 21119948 in words is "twenty-one million, one hundred nineteen thousand, nine hundred forty-eight".