28328534 has 16 divisors (see below), whose sum is σ = 47340720. Its totient is φ = 12623520.

The previous prime is 28328527. The next prime is 28328543. The reversal of 28328534 is 43582382.

It is a super-3 number, since 3×28328534³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28328494 and 28328503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18032 + ... + 19539.

It is an arithmetic number, because the mean of its divisors is an integer number (2958795).

Almost surely, 2^28328534 is an apocalyptic number.

28328534 is a deficient number, since it is larger than the sum of its proper divisors (19012186).

28328534 is a wasteful number, since it uses less digits than its factorization.

28328534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37615.

The product of its digits is 46080, while the sum is 35.

The square root of 28328534 is about 5322.4556362641. The cubic root of 28328534 is about 304.8419283030.

The spelling of 28328534 in words is "twenty-eight million, three hundred twenty-eight thousand, five hundred thirty-four".