28413243 has 12 divisors (see below), whose sum is σ = 42456960. Its totient is φ = 18288816.

The previous prime is 28413241. The next prime is 28413263. The reversal of 28413243 is 34231482.

28413243 is a `hidden beast` number, since 2 + 8 + 413 + 243 = 666.

It is not a de Polignac number, because 28413243 - 2¹ = 28413241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28413241) 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, 54171 + ... + 54692.

It is an arithmetic number, because the mean of its divisors is an integer number (3538080).

Almost surely, 2^28413243 is an apocalyptic number.

28413243 is a deficient number, since it is larger than the sum of its proper divisors (14043717).

28413243 is a wasteful number, since it uses less digits than its factorization.

28413243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108898 (or 108895 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 28413243 is about 5330.4073953123. The cubic root of 28413243 is about 305.1454757059.

It can be divided in two parts, 2841 and 3243, that added together give a square (6084 = 78²).

The spelling of 28413243 in words is "twenty-eight million, four hundred thirteen thousand, two hundred forty-three".