28003151 has 6 divisors (see below), whose sum is σ = 30780456. Its totient is φ = 25457300.

The previous prime is 28003147. The next prime is 28003153. The reversal of 28003151 is 15130082.

It is not a de Polignac number, because 28003151 - 2² = 28003147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115595 + ... + 115836.

It is an arithmetic number, because the mean of its divisors is an integer number (5130076).

Almost surely, 2^28003151 is an apocalyptic number.

28003151 is a deficient number, since it is larger than the sum of its proper divisors (2777305).

28003151 is a wasteful number, since it uses less digits than its factorization.

28003151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231453 (or 231442 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 28003151 is about 5291.8003552666. The cubic root of 28003151 is about 303.6702875839.

It can be divided in two parts, 280031 and 51, that added together give a palindrome (280082).

The spelling of 28003151 in words is "twenty-eight million, three thousand, one hundred fifty-one".