221928048 has 60 divisors (see below), whose sum is σ = 622399648. Its totient is φ = 73820160.

The previous prime is 221928043. The next prime is 221928061. The reversal of 221928048 is 840829122.

221928048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221928041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81753 + ... + 84423.

Almost surely, 2^221928048 is an apocalyptic number.

It is an amenable number.

221928048 is an abundant number, since it is smaller than the sum of its proper divisors (400471600).

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

221928048 is a wasteful number, since it uses less digits than its factorization.

221928048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3253 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 221928048 is about 14897.2496790515. The cubic root of 221928048 is about 605.4394712339.

The spelling of 221928048 in words is "two hundred twenty-one million, nine hundred twenty-eight thousand, forty-eight".