28475545 has 16 divisors (see below), whose sum is σ = 39155328. Its totient is φ = 19474560.

The previous prime is 28475543. The next prime is 28475563. The reversal of 28475545 is 54557482.

It is not a de Polignac number, because 28475545 - 2¹ = 28475543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28475498 and 28475507.

It is not an unprimeable number, because it can be changed into a prime (28475543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16357 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (2447208).

Almost surely, 2^28475545 is an apocalyptic number.

It is an amenable number.

28475545 is a deficient number, since it is larger than the sum of its proper divisors (10679783).

28475545 is a wasteful number, since it uses less digits than its factorization.

28475545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160.

The product of its digits is 224000, while the sum is 40.

The square root of 28475545 is about 5336.2482138671. The cubic root of 28475545 is about 305.3683447274.

The spelling of 28475545 in words is "twenty-eight million, four hundred seventy-five thousand, five hundred forty-five".