28710045 has 160 divisors (see below), whose sum is σ = 68302080. Its totient is φ = 11197440.

The previous prime is 28710037. The next prime is 28710053. The reversal of 28710045 is 54001782.

It is an interprime number because it is at equal distance from previous prime (28710037) and next prime (28710053).

It is not a de Polignac number, because 28710045 - 2³ = 28710037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 700225 + ... + 700265.

It is an arithmetic number, because the mean of its divisors is an integer number (426888).

Almost surely, 2^28710045 is an apocalyptic number.

It is an amenable number.

28710045 is an abundant number, since it is smaller than the sum of its proper divisors (39592035).

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

28710045 is a wasteful number, since it uses less digits than its factorization.

28710045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28710045 is about 5358.1755290397. The cubic root of 28710045 is about 306.2043041636.

The spelling of 28710045 in words is "twenty-eight million, seven hundred ten thousand, forty-five".