28002534 has 16 divisors (see below), whose sum is σ = 64005888. Its totient is φ = 8000712.

The previous prime is 28002529. The next prime is 28002539. The reversal of 28002534 is 43520082.

It is an interprime number because it is at equal distance from previous prime (28002529) and next prime (28002539).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002539) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 333322 + ... + 333405.

It is an arithmetic number, because the mean of its divisors is an integer number (4000368).

Almost surely, 2^28002534 is an apocalyptic number.

28002534 is an abundant number, since it is smaller than the sum of its proper divisors (36003354).

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

28002534 is a wasteful number, since it uses less digits than its factorization.

28002534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666739.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 28002534 is about 5291.7420572057. The cubic root of 28002534 is about 303.6680572880.

The spelling of 28002534 in words is "twenty-eight million, two thousand, five hundred thirty-four".