28577934 has 160 divisors (see below), whose sum is σ = 83635200. Its totient is φ = 7076160.

The previous prime is 28577933. The next prime is 28577953. The reversal of 28577934 is 43977582.

Its product of digits (423360) is a multiple of the sum of its prime factors (140).

It is a self number, because there is not a number n which added to its sum of digits gives 28577934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28577933) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 361707 + ... + 361785.

It is an arithmetic number, because the mean of its divisors is an integer number (522720).

Almost surely, 2^28577934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28577934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41817600).

28577934 is an abundant number, since it is smaller than the sum of its proper divisors (55057266).

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

28577934 is a wasteful number, since it uses less digits than its factorization.

28577934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 131 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 28577934 is about 5345.8333307353. The cubic root of 28577934 is about 305.7339093959.

The spelling of 28577934 in words is "twenty-eight million, five hundred seventy-seven thousand, nine hundred thirty-four".