28539654 has 128 divisors (see below), whose sum is σ = 73543680. Its totient is φ = 7257600.

The previous prime is 28539647. The next prime is 28539677. The reversal of 28539654 is 45693582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 771324 + ... + 771360.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^28539654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28539654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36771840).

28539654 is an abundant number, since it is smaller than the sum of its proper divisors (45004026).

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

28539654 is a wasteful number, since it uses less digits than its factorization.

28539654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its digits is 259200, while the sum is 42.

The square root of 28539654 is about 5342.2517724271. The cubic root of 28539654 is about 305.5973387171.

The spelling of 28539654 in words is "twenty-eight million, five hundred thirty-nine thousand, six hundred fifty-four".