28546028 has 18 divisors (see below), whose sum is σ = 58111956. Its totient is φ = 12233928.

The previous prime is 28546019. The next prime is 28546031. The reversal of 28546028 is 82064582.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72626 + ... + 73017.

It is an arithmetic number, because the mean of its divisors is an integer number (3228442).

Almost surely, 2^28546028 is an apocalyptic number.

28546028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28546028 is an abundant number, since it is smaller than the sum of its proper divisors (29565928).

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

28546028 is a wasteful number, since it uses less digits than its factorization.

28546028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145661 (or 145652 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28546028 is about 5342.8483040416. The cubic root of 28546028 is about 305.6200875615.

The spelling of 28546028 in words is "twenty-eight million, five hundred forty-six thousand, twenty-eight".