28577874 has 16 divisors (see below), whose sum is σ = 61552512. Its totient is φ = 8793168.

The previous prime is 28577873. The next prime is 28577893. The reversal of 28577874 is 47877582.

It is a happy number.

It is a super-3 number, since 3×28577874³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28577873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183114 + ... + 183269.

It is an arithmetic number, because the mean of its divisors is an integer number (3847032).

Almost surely, 2^28577874 is an apocalyptic number.

28577874 is an abundant number, since it is smaller than the sum of its proper divisors (32974638).

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

28577874 is a wasteful number, since it uses less digits than its factorization.

28577874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366401.

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

The square root of 28577874 is about 5345.8277188851. The cubic root of 28577874 is about 305.7336954307.

It can be divided in two parts, 2857 and 7874, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 28577874 in words is "twenty-eight million, five hundred seventy-seven thousand, eight hundred seventy-four".