28860406 has 8 divisors (see below), whose sum is σ = 43581600. Its totient is φ = 14333208.

The previous prime is 28860401. The next prime is 28860413. The reversal of 28860406 is 60406882.

28860406 = 364² + 365² + ... + 512².

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 (28860401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48126 + ... + 48721.

It is an arithmetic number, because the mean of its divisors is an integer number (5447700).

Almost surely, 2^28860406 is an apocalyptic number.

28860406 is a deficient number, since it is larger than the sum of its proper divisors (14721194).

28860406 is a wasteful number, since it uses less digits than its factorization.

28860406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96998.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 28860406 is about 5372.1881947676. The cubic root of 28860406 is about 306.7379274116.

The spelling of 28860406 in words is "twenty-eight million, eight hundred sixty thousand, four hundred six".