28877574 has 16 divisors (see below), whose sum is σ = 63005760. Its totient is φ = 8750760.

The previous prime is 28877573. The next prime is 28877593. The reversal of 28877574 is 47577882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218704 + ... + 218835.

It is an arithmetic number, because the mean of its divisors is an integer number (3937860).

Almost surely, 2^28877574 is an apocalyptic number.

28877574 is an abundant number, since it is smaller than the sum of its proper divisors (34128186).

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

28877574 is a wasteful number, since it uses less digits than its factorization.

28877574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437555.

The product of its digits is 878080, while the sum is 48.

The square root of 28877574 is about 5373.7858163496. The cubic root of 28877574 is about 306.7987377467.

The spelling of 28877574 in words is "twenty-eight million, eight hundred seventy-seven thousand, five hundred seventy-four".