28694232 has 144 divisors (see below), whose sum is σ = 94826160. Its totient is φ = 7676928.

The previous prime is 28694231. The next prime is 28694257. The reversal of 28694232 is 23249682.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28694231) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 145558 + ... + 145754.

It is an arithmetic number, because the mean of its divisors is an integer number (658515).

Almost surely, 2^28694232 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 28694232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47413080).

28694232 is an abundant number, since it is smaller than the sum of its proper divisors (66131928).

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

28694232 is a wasteful number, since it uses less digits than its factorization.

28694232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 226 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 28694232 is about 5356.6997302444. The cubic root of 28694232 is about 306.1480764809.

The spelling of 28694232 in words is "twenty-eight million, six hundred ninety-four thousand, two hundred thirty-two".