28540045 has 8 divisors (see below), whose sum is σ = 34977024. Its totient is φ = 22346064.

The previous prime is 28540027. The next prime is 28540051. The reversal of 28540045 is 54004582.

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

It is a cyclic number.

It is not a de Polignac number, because 28540045 - 2¹⁷ = 28408973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28539995 and 28540022.

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, 60489 + ... + 60958.

It is an arithmetic number, because the mean of its divisors is an integer number (4372128).

Almost surely, 2^28540045 is an apocalyptic number.

It is an amenable number.

28540045 is a deficient number, since it is larger than the sum of its proper divisors (6436979).

28540045 is a wasteful number, since it uses less digits than its factorization.

28540045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121499.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 28540045 is about 5342.2883673572. The cubic root of 28540045 is about 305.5987342959.

The spelling of 28540045 in words is "twenty-eight million, five hundred forty thousand, forty-five".