28266234 has 16 divisors (see below), whose sum is σ = 58356480. Its totient is φ = 9118080.

The previous prime is 28266221. The next prime is 28266239. The reversal of 28266234 is 43266282.

It is a junction number, because it is equal to n+sod(n) for n = 28266195 and 28266204.

It is not an unprimeable number, because it can be changed into a prime (28266239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75799 + ... + 76170.

It is an arithmetic number, because the mean of its divisors is an integer number (3647280).

Almost surely, 2^28266234 is an apocalyptic number.

28266234 is an abundant number, since it is smaller than the sum of its proper divisors (30090246).

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

28266234 is a wasteful number, since it uses less digits than its factorization.

28266234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152005.

The product of its digits is 27648, while the sum is 33.

The square root of 28266234 is about 5316.5998532897. The cubic root of 28266234 is about 304.6182952305.

The spelling of 28266234 in words is "twenty-eight million, two hundred sixty-six thousand, two hundred thirty-four".