2299428 has 60 divisors (see below), whose sum is σ = 6179712. Its totient is φ = 745200.

The previous prime is 2299397. The next prime is 2299433. The reversal of 2299428 is 8249922.

2299428 is a `hidden beast` number, since 229 + 9 + 428 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2299392 and 2299401.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15153 + ... + 15303.

2^2299428 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 2299428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3089856).

2299428 is an abundant number, since it is smaller than the sum of its proper divisors (3880284).

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

2299428 is a wasteful number, since it uses less digits than its factorization.

2299428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 203 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2299428 is about 1516.3864942685. The cubic root of 2299428 is about 131.9896686129.

The spelling of 2299428 in words is "two million, two hundred ninety-nine thousand, four hundred twenty-eight".