28003032 has 24 divisors (see below), whose sum is σ = 75841740. Its totient is φ = 9334320.

The previous prime is 28003021. The next prime is 28003037. The reversal of 28003032 is 23030082.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 28002996 and 28003014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003037) 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 5 ways as a sum of consecutive naturals, for example, 194394 + ... + 194537.

Almost surely, 2^28003032 is an apocalyptic number.

It is an amenable number.

28003032 is an abundant number, since it is smaller than the sum of its proper divisors (47838708).

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

28003032 is a wasteful number, since it uses less digits than its factorization.

28003032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388943 (or 388936 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 28003032 is about 5291.7891114443. The cubic root of 28003032 is about 303.6698574322.

It can be divided in two parts, 2800 and 3032, that added together give a cube (5832 = 18³).

The spelling of 28003032 in words is "twenty-eight million, three thousand, thirty-two".