28751349 has 16 divisors (see below), whose sum is σ = 42531840. Its totient is φ = 17128560.

The previous prime is 28751347. The next prime is 28751399. The reversal of 28751349 is 94315782.

It is not a de Polignac number, because 28751349 - 2¹ = 28751347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28751347) 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, 5437 + ... + 9330.

It is an arithmetic number, because the mean of its divisors is an integer number (2658240).

Almost surely, 2^28751349 is an apocalyptic number.

It is an amenable number.

28751349 is a deficient number, since it is larger than the sum of its proper divisors (13780491).

28751349 is a wasteful number, since it uses less digits than its factorization.

28751349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14840.

The product of its digits is 60480, while the sum is 39.

The square root of 28751349 is about 5362.0284408048. The cubic root of 28751349 is about 306.3510751200.

It can be divided in two parts, 2875 and 1349, that added together give a palindrome (4224).

The spelling of 28751349 in words is "twenty-eight million, seven hundred fifty-one thousand, three hundred forty-nine".