21954848 has 12 divisors (see below), whose sum is σ = 43223670. Its totient is φ = 10977408.

The previous prime is 21954841. The next prime is 21954853. The reversal of 21954848 is 84845912.

It can be written as a sum of positive squares in only one way, i.e., 14047504 + 7907344 = 3748^2 + 2812^2 .

It is not an unprimeable number, because it can be changed into a prime (21954841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343013 + ... + 343076.

Almost surely, 2^21954848 is an apocalyptic number.

It is an amenable number.

21954848 is a deficient number, since it is larger than the sum of its proper divisors (21268822).

21954848 is an equidigital number, since it uses as much as digits as its factorization.

21954848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686099 (or 686091 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 21954848 is about 4685.6000682943. The cubic root of 21954848 is about 280.0121083199.

The spelling of 21954848 in words is "twenty-one million, nine hundred fifty-four thousand, eight hundred forty-eight".