2251928 has 16 divisors (see below), whose sum is σ = 4825680. Its totient is φ = 965088.

The previous prime is 2251927. The next prime is 2251943. The reversal of 2251928 is 8291522.

It is a self number, because there is not a number n which added to its sum of digits gives 2251928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251927) 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, 20051 + ... + 20162.

It is an arithmetic number, because the mean of its divisors is an integer number (301605).

2^2251928 is an apocalyptic number.

2251928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2251928 is an abundant number, since it is smaller than the sum of its proper divisors (2573752).

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

2251928 is a wasteful number, since it uses less digits than its factorization.

2251928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40226 (or 40222 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2251928 is about 1500.6425290521. The cubic root of 2251928 is about 131.0744870947.

The spelling of 2251928 in words is "two million, two hundred fifty-one thousand, nine hundred twenty-eight".