28470487 has 8 divisors (see below), whose sum is σ = 29179440. Its totient is φ = 27768000.

The previous prime is 28470457. The next prime is 28470499. The reversal of 28470487 is 78407482.

It is a happy number.

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 28470487 - 2¹⁹ = 27946199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470457) 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, 7987 + ... + 10987.

It is an arithmetic number, because the mean of its divisors is an integer number (3647430).

Almost surely, 2^28470487 is an apocalyptic number.

28470487 is a deficient number, since it is larger than the sum of its proper divisors (708953).

28470487 is a wasteful number, since it uses less digits than its factorization.

28470487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 28470487 is about 5335.7742643406. The cubic root of 28470487 is about 305.3502631941.

The spelling of 28470487 in words is "twenty-eight million, four hundred seventy thousand, four hundred eighty-seven".