28745834 has 8 divisors (see below), whose sum is σ = 46435620. Its totient is φ = 13267296.

The previous prime is 28745833. The next prime is 28745839. The reversal of 28745834 is 43854782.

It can be written as a sum of positive squares in 2 ways, for example, as 20025625 + 8720209 = 4475^2 + 2953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28745791 and 28745800.

It is not an unprimeable number, because it can be changed into a prime (28745831) 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, 552779 + ... + 552830.

Almost surely, 2^28745834 is an apocalyptic number.

28745834 is a deficient number, since it is larger than the sum of its proper divisors (17689786).

28745834 is a wasteful number, since it uses less digits than its factorization.

28745834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105624.

The product of its digits is 215040, while the sum is 41.

The square root of 28745834 is about 5361.5141518045. The cubic root of 28745834 is about 306.3314860772.

The spelling of 28745834 in words is "twenty-eight million, seven hundred forty-five thousand, eight hundred thirty-four".