28480487 has 16 divisors (see below), whose sum is σ = 34467840. Its totient is φ = 22988448.

The previous prime is 28480477. The next prime is 28480493. The reversal of 28480487 is 78408482.

It is not a de Polignac number, because 28480487 - 2¹⁰ = 28479463 is a prime.

It is a super-2 number, since 2×28480487² = 1622276279514338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28480477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25658 + ... + 26744.

It is an arithmetic number, because the mean of its divisors is an integer number (2154240).

Almost surely, 2^28480487 is an apocalyptic number.

28480487 is a deficient number, since it is larger than the sum of its proper divisors (5987353).

28480487 is a wasteful number, since it uses less digits than its factorization.

28480487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310.

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 28480487 is about 5336.7112531970. The cubic root of 28480487 is about 305.3860095115.

The spelling of 28480487 in words is "twenty-eight million, four hundred eighty thousand, four hundred eighty-seven".