221427848 has 16 divisors (see below), whose sum is σ = 415338000. Its totient is φ = 110671056.

The previous prime is 221427841. The next prime is 221427851. The reversal of 221427848 is 848724122.

It is a super-2 number, since 2×221427848² = 98060583739822208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221427841) 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, 31523 + ... + 37901.

It is an arithmetic number, because the mean of its divisors is an integer number (25958625).

Almost surely, 2^221427848 is an apocalyptic number.

It is an amenable number.

221427848 is a deficient number, since it is larger than the sum of its proper divisors (193910152).

221427848 is a wasteful number, since it uses less digits than its factorization.

221427848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10724 (or 10720 counting only the distinct ones).

The product of its digits is 57344, while the sum is 38.

The square root of 221427848 is about 14880.4518748592. The cubic root of 221427848 is about 604.9842656928.

The spelling of 221427848 in words is "two hundred twenty-one million, four hundred twenty-seven thousand, eight hundred forty-eight".