28226832 has 60 divisors (see below), whose sum is σ = 74588976. Its totient is φ = 9197760.

The previous prime is 28226827. The next prime is 28226843. The reversal of 28226832 is 23862282.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28226793 and 28226802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215407 + ... + 215537.

Almost surely, 2^28226832 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 28226832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37294488).

28226832 is an abundant number, since it is smaller than the sum of its proper divisors (46362144).

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

28226832 is a wasteful number, since it uses less digits than its factorization.

28226832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 203 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 28226832 is about 5312.8929972285. The cubic root of 28226832 is about 304.4766875037.

The spelling of 28226832 in words is "twenty-eight million, two hundred twenty-six thousand, eight hundred thirty-two".