2287428 has 96 divisors (see below), whose sum is σ = 6623232. Its totient is φ = 604800.

The previous prime is 2287423. The next prime is 2287463. The reversal of 2287428 is 8247822.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2287421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53175 + ... + 53217.

It is an arithmetic number, because the mean of its divisors is an integer number (68992).

2^2287428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2287428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3311616).

2287428 is an abundant number, since it is smaller than the sum of its proper divisors (4335804).

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

2287428 is a wasteful number, since it uses less digits than its factorization.

2287428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 103 counting only the distinct ones).

The product of its digits is 14336, while the sum is 33.

The square root of 2287428 is about 1512.4245435723. The cubic root of 2287428 is about 131.7596636882.

The spelling of 2287428 in words is "two million, two hundred eighty-seven thousand, four hundred twenty-eight".