28206545 has 8 divisors (see below), whose sum is σ = 35629440. Its totient is φ = 21377520.

The previous prime is 28206539. The next prime is 28206551. The reversal of 28206545 is 54560282.

It is an interprime number because it is at equal distance from previous prime (28206539) and next prime (28206551).

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

It is not a de Polignac number, because 28206545 - 2¹⁴ = 28190161 is a prime.

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, 148361 + ... + 148550.

It is an arithmetic number, because the mean of its divisors is an integer number (4453680).

Almost surely, 2^28206545 is an apocalyptic number.

It is an amenable number.

28206545 is a deficient number, since it is larger than the sum of its proper divisors (7422895).

28206545 is a wasteful number, since it uses less digits than its factorization.

28206545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296935.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 28206545 is about 5310.9834305899. The cubic root of 28206545 is about 304.4037262050.

The spelling of 28206545 in words is "twenty-eight million, two hundred six thousand, five hundred forty-five".