28934272 has 32 divisors (see below), whose sum is σ = 61037820. Its totient is φ = 13615104.

The previous prime is 28934267. The next prime is 28934273. The reversal of 28934272 is 27243982.

It can be written as a sum of positive squares in 2 ways, for example, as 27625536 + 1308736 = 5256^2 + 1144^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4473 + ... + 8824.

Almost surely, 2^28934272 is an apocalyptic number.

It is an amenable number.

28934272 is an abundant number, since it is smaller than the sum of its proper divisors (32103548).

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

28934272 is a wasteful number, since it uses less digits than its factorization.

28934272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328 (or 13316 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 28934272 is about 5379.0586537051. The cubic root of 28934272 is about 306.9993952179. Note that the first 3 decimals are identical.

The spelling of 28934272 in words is "twenty-eight million, nine hundred thirty-four thousand, two hundred seventy-two".