28250465 has 8 divisors (see below), whose sum is σ = 33929088. Its totient is φ = 22581360.

The previous prime is 28250449. The next prime is 28250471. The reversal of 28250465 is 56405282.

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

It is not a de Polignac number, because 28250465 - 2⁴ = 28250449 is a prime.

It is a Duffinian number.

It is a Curzon 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, 10664 + ... + 13046.

It is an arithmetic number, because the mean of its divisors is an integer number (4241136).

Almost surely, 2^28250465 is an apocalyptic number.

It is an amenable number.

28250465 is a deficient number, since it is larger than the sum of its proper divisors (5678623).

28250465 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (28250464) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (4759).

28250465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759.

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

The square root of 28250465 is about 5315.1166497077. The cubic root of 28250465 is about 304.5616384738.

The spelling of 28250465 in words is "twenty-eight million, two hundred fifty thousand, four hundred sixty-five".