28514969 has 4 divisors (see below), whose sum is σ = 32588544. Its totient is φ = 24441396.

The previous prime is 28514957. The next prime is 28515013. The reversal of 28514969 is 96941582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-28514969 is a prime.

It is a super-2 number, since 2×28514969² = 1626206914141922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28514939) 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 3 ways as a sum of consecutive naturals, for example, 2036777 + ... + 2036790.

It is an arithmetic number, because the mean of its divisors is an integer number (8147136).

Almost surely, 2^28514969 is an apocalyptic number.

It is an amenable number.

28514969 is a deficient number, since it is larger than the sum of its proper divisors (4073575).

28514969 is an equidigital number, since it uses as much as digits as its factorization.

28514969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073574.

The product of its digits is 155520, while the sum is 44.

The square root of 28514969 is about 5339.9409172761. The cubic root of 28514969 is about 305.5092058303.

The spelling of 28514969 in words is "twenty-eight million, five hundred fourteen thousand, nine hundred sixty-nine".