21941148 has 24 divisors (see below), whose sum is σ = 52580752. Its totient is φ = 7115904.

The previous prime is 21941147. The next prime is 21941159. The reversal of 21941148 is 84114912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21941141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24265 + ... + 25152.

Almost surely, 2^21941148 is an apocalyptic number.

It is an amenable number.

21941148 is an abundant number, since it is smaller than the sum of its proper divisors (30639604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21941148 is a wasteful number, since it uses less digits than its factorization.

21941148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49461 (or 49459 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 21941148 is about 4684.1379142805. The cubic root of 21941148 is about 279.9538529391.

The spelling of 21941148 in words is "twenty-one million, nine hundred forty-one thousand, one hundred forty-eight".