28369478 has 8 divisors (see below), whose sum is σ = 42581280. Its totient is φ = 14175720.

The previous prime is 28369477. The next prime is 28369513. The reversal of 28369478 is 87496382.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28369477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (5322660).

Almost surely, 2^28369478 is an apocalyptic number.

28369478 is a deficient number, since it is larger than the sum of its proper divisors (14211802).

28369478 is a wasteful number, since it uses less digits than its factorization.

28369478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9022.

The product of its digits is 580608, while the sum is 47.

The square root of 28369478 is about 5326.3005923436. The cubic root of 28369478 is about 304.9887230445.

The spelling of 28369478 in words is "twenty-eight million, three hundred sixty-nine thousand, four hundred seventy-eight".