28460387 has 8 divisors (see below), whose sum is σ = 29450112. Its totient is φ = 27475200.

The previous prime is 28460371. The next prime is 28460429. The reversal of 28460387 is 78306482.

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 28460387 - 2⁴ = 28460371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28460387.

It is not an unprimeable number, because it can be changed into a prime (28460317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15923 + ... + 17619.

It is an arithmetic number, because the mean of its divisors is an integer number (3681264).

Almost surely, 2^28460387 is an apocalyptic number.

28460387 is a deficient number, since it is larger than the sum of its proper divisors (989725).

28460387 is a wasteful number, since it uses less digits than its factorization.

28460387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28460387 is about 5334.8277385498. The cubic root of 28460387 is about 305.3141509161.

The spelling of 28460387 in words is "twenty-eight million, four hundred sixty thousand, three hundred eighty-seven".