28484087 has 4 divisors (see below), whose sum is σ = 28659000. Its totient is φ = 28309176.

The previous prime is 28484077. The next prime is 28484101. The reversal of 28484087 is 78048482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28484087 - 2¹² = 28479991 is a prime.

It is a super-2 number, since 2×28484087² = 1622686424447138, 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 (28484077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87212 + ... + 87537.

It is an arithmetic number, because the mean of its divisors is an integer number (7164750).

Almost surely, 2^28484087 is an apocalyptic number.

28484087 is a deficient number, since it is larger than the sum of its proper divisors (174913).

28484087 is a wasteful number, since it uses less digits than its factorization.

28484087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174912.

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

The square root of 28484087 is about 5337.0485289156. The cubic root of 28484087 is about 305.3988761374.

The spelling of 28484087 in words is "twenty-eight million, four hundred eighty-four thousand, eighty-seven".