28860378 has 8 divisors (see below), whose sum is σ = 57720768. Its totient is φ = 9620124.

The previous prime is 28860367. The next prime is 28860383. The reversal of 28860378 is 87306882.

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

28860378 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2405026 + ... + 2405037.

It is an arithmetic number, because the mean of its divisors is an integer number (7215096).

Almost surely, 2^28860378 is an apocalyptic number.

28860378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28860378 is a wasteful number, since it uses less digits than its factorization.

28860378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810068.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28860378 is about 5372.1855887525. The cubic root of 28860378 is about 306.7378282138.

The spelling of 28860378 in words is "twenty-eight million, eight hundred sixty thousand, three hundred seventy-eight".