22280928 has 48 divisors (see below), whose sum is σ = 61036416. Its totient is φ = 7103360.

The previous prime is 22280927. The next prime is 22280933. The reversal of 22280928 is 82908222.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280927) 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, 2838 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (1271592).

Almost surely, 2^22280928 is an apocalyptic number.

It is an amenable number.

22280928 is an abundant number, since it is smaller than the sum of its proper divisors (38755488).

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

22280928 is a wasteful number, since it uses less digits than its factorization.

22280928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127 (or 10119 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 22280928 is about 4720.2677890137. The cubic root of 22280928 is about 281.3915759313.

The spelling of 22280928 in words is "twenty-two million, two hundred eighty thousand, nine hundred twenty-eight".