28363945 has 8 divisors (see below), whose sum is σ = 35516736. Its totient is φ = 21704496.

The previous prime is 28363919. The next prime is 28363987. The reversal of 28363945 is 54936382.

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 28363945 - 2⁵ = 28363913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28363898 and 28363907.

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, 123207 + ... + 123436.

It is an arithmetic number, because the mean of its divisors is an integer number (4439592).

Almost surely, 2^28363945 is an apocalyptic number.

It is an amenable number.

28363945 is a deficient number, since it is larger than the sum of its proper divisors (7152791).

28363945 is a wasteful number, since it uses less digits than its factorization.

28363945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246671.

The product of its digits is 155520, while the sum is 40.

The square root of 28363945 is about 5325.7811633600. The cubic root of 28363945 is about 304.9688940776.

The spelling of 28363945 in words is "twenty-eight million, three hundred sixty-three thousand, nine hundred forty-five".