28949565 has 8 divisors (see below), whose sum is σ = 46319328. Its totient is φ = 15439760.

The previous prime is 28949539. The next prime is 28949573. The reversal of 28949565 is 56594982.

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

It is not a de Polignac number, because 28949565 - 2⁵ = 28949533 is a prime.

It is a Curzon number.

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, 964971 + ... + 965000.

It is an arithmetic number, because the mean of its divisors is an integer number (5789916).

Almost surely, 2^28949565 is an apocalyptic number.

It is an amenable number.

28949565 is a deficient number, since it is larger than the sum of its proper divisors (17369763).

28949565 is a wasteful number, since it uses less digits than its factorization.

28949565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929979.

The product of its digits is 777600, while the sum is 48.

The square root of 28949565 is about 5380.4799971750. The cubic root of 28949565 is about 307.0534731274.

The spelling of 28949565 in words is "twenty-eight million, nine hundred forty-nine thousand, five hundred sixty-five".