28934136 has 192 divisors, whose sum is σ = 103783680. Its totient is φ = 7050240.

The previous prime is 28934123. The next prime is 28934137. The reversal of 28934136 is 63143982.

28934136 is a `hidden beast` number, since 289 + 341 + 36 = 666.

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 self number, because there is not a number n which added to its sum of digits gives 28934136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94095 + ... + 94401.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

Almost surely, 2^28934136 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 28934136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51891840).

28934136 is an abundant number, since it is smaller than the sum of its proper divisors (74849544).

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

28934136 is a wasteful number, since it uses less digits than its factorization.

28934136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 347 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 28934136 is about 5379.0460120731. The cubic root of 28934136 is about 306.9989142198.

The spelling of 28934136 in words is "twenty-eight million, nine hundred thirty-four thousand, one hundred thirty-six".