28413287 has 12 divisors (see below), whose sum is σ = 33860736. Its totient is φ = 23758560.

The previous prime is 28413269. The next prime is 28413289. The reversal of 28413287 is 78231482.

It is not a de Polignac number, because 28413287 - 2⁶ = 28413223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28413289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5063 + ... + 9080.

It is an arithmetic number, because the mean of its divisors is an integer number (2821728).

Almost surely, 2^28413287 is an apocalyptic number.

28413287 is a deficient number, since it is larger than the sum of its proper divisors (5447449).

28413287 is a wasteful number, since it uses less digits than its factorization.

28413287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14198 (or 14191 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 28413287 is about 5330.4115225750. The cubic root of 28413287 is about 305.1456332192.

The spelling of 28413287 in words is "twenty-eight million, four hundred thirteen thousand, two hundred eighty-seven".