28814949 has 12 divisors (see below), whose sum is σ = 44070156. Its totient is φ = 18079872.

The previous prime is 28814927. The next prime is 28814953. The reversal of 28814949 is 94941882.

It can be written as a sum of positive squares in 2 ways, for example, as 18122049 + 10692900 = 4257^2 + 3270^2 .

It is not a de Polignac number, because 28814949 - 2⁸ = 28814693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28814959) 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, 94014 + ... + 94319.

It is an arithmetic number, because the mean of its divisors is an integer number (3672513).

Almost surely, 2^28814949 is an apocalyptic number.

It is an amenable number.

28814949 is a deficient number, since it is larger than the sum of its proper divisors (15255207).

28814949 is a wasteful number, since it uses less digits than its factorization.

28814949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188356 (or 188353 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 28814949 is about 5367.9557561515. The cubic root of 28814949 is about 306.5767987825.

The spelling of 28814949 in words is "twenty-eight million, eight hundred fourteen thousand, nine hundred forty-nine".