28032514 has 4 divisors (see below), whose sum is σ = 42048774. Its totient is φ = 14016256.

The previous prime is 28032491. The next prime is 28032523. The reversal of 28032514 is 41523082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41523082 = 2 ⋅20761541.

It can be written as a sum of positive squares in only one way, i.e., 19651489 + 8381025 = 4433^2 + 2895^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7008127 + ... + 7008130.

Almost surely, 2^28032514 is an apocalyptic number.

28032514 is a deficient number, since it is larger than the sum of its proper divisors (14016260).

28032514 is a wasteful number, since it uses less digits than its factorization.

28032514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016259.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28032514 is about 5294.5740149704. The cubic root of 28032514 is about 303.7763894045.

Adding to 28032514 its reverse (41523082), we get a palindrome (69555596).

The spelling of 28032514 in words is "twenty-eight million, thirty-two thousand, five hundred fourteen".