28430260 has 24 divisors (see below), whose sum is σ = 60832296. Its totient is φ = 11157120.

The previous prime is 28430219. The next prime is 28430263. The reversal of 28430260 is 6203482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10265616 + 18164644 = 3204^2 + 4262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28430263) 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, 12351 + ... + 14470.

It is an arithmetic number, because the mean of its divisors is an integer number (2534679).

Almost surely, 2^28430260 is an apocalyptic number.

28430260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28430260 is an abundant number, since it is smaller than the sum of its proper divisors (32402036).

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

28430260 is a wasteful number, since it uses less digits than its factorization.

28430260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26883 (or 26881 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28430260 is about 5332.0033758429. The cubic root of 28430260 is about 305.2063818622.

The spelling of 28430260 in words is "twenty-eight million, four hundred thirty thousand, two hundred sixty".