28413511 has 16 divisors (see below), whose sum is σ = 34703424. Its totient is φ = 22708224.

The previous prime is 28413509. The next prime is 28413523. The reversal of 28413511 is 11531482.

It is not a de Polignac number, because 28413511 - 2¹ = 28413509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28413551) 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 15 ways as a sum of consecutive naturals, for example, 12391 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (2168964).

Almost surely, 2^28413511 is an apocalyptic number.

28413511 is a deficient number, since it is larger than the sum of its proper divisors (6289913).

28413511 is a wasteful number, since it uses less digits than its factorization.

28413511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250.

The product of its digits is 960, while the sum is 25.

The square root of 28413511 is about 5330.4325340445. The cubic root of 28413511 is about 305.1464351027.

Adding to 28413511 its reverse (11531482), we get a palindrome (39944993).

The spelling of 28413511 in words is "twenty-eight million, four hundred thirteen thousand, five hundred eleven".