28964551 has 16 divisors (see below), whose sum is σ = 36241920. Its totient is φ = 22488480.

The previous prime is 28964543. The next prime is 28964563. The reversal of 28964551 is 15546982.

It is not a de Polignac number, because 28964551 - 2³ = 28964543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29470 + ... + 30436.

It is an arithmetic number, because the mean of its divisors is an integer number (2265120).

Almost surely, 2^28964551 is an apocalyptic number.

28964551 is a deficient number, since it is larger than the sum of its proper divisors (7277369).

28964551 is a wasteful number, since it uses less digits than its factorization.

28964551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

The product of its digits is 86400, while the sum is 40.

The square root of 28964551 is about 5381.8724436761. The cubic root of 28964551 is about 307.1064469755.

Subtracting from 28964551 its reverse (15546982), we obtain a square (13417569 = 3663²).

It can be divided in two parts, 2896 and 4551, that added together give a palindrome (7447).

The spelling of 28964551 in words is "twenty-eight million, nine hundred sixty-four thousand, five hundred fifty-one".