28545461 has 8 divisors (see below), whose sum is σ = 34041984. Its totient is φ = 23403600.

The previous prime is 28545437. The next prime is 28545469. The reversal of 28545461 is 16454582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28545461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545469) 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, 88490 + ... + 88811.

It is an arithmetic number, because the mean of its divisors is an integer number (4255248).

Almost surely, 2^28545461 is an apocalyptic number.

It is an amenable number.

28545461 is a deficient number, since it is larger than the sum of its proper divisors (5496523).

28545461 is a wasteful number, since it uses less digits than its factorization.

28545461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177331.

The product of its digits is 38400, while the sum is 35.

The square root of 28545461 is about 5342.7952421930. The cubic root of 28545461 is about 305.6180640723.

The spelling of 28545461 in words is "twenty-eight million, five hundred forty-five thousand, four hundred sixty-one".