28799451 has 12 divisors (see below), whose sum is σ = 41654080. Its totient is φ = 19174320.

The previous prime is 28799447. The next prime is 28799461. The reversal of 28799451 is 15499782.

It is not a de Polignac number, because 28799451 - 2² = 28799447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28799397 and 28799406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28799401) 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 11 ways as a sum of consecutive naturals, for example, 7305 + ... + 10533.

Almost surely, 2^28799451 is an apocalyptic number.

28799451 is a deficient number, since it is larger than the sum of its proper divisors (12854629).

28799451 is a wasteful number, since it uses less digits than its factorization.

28799451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226 (or 4223 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 28799451 is about 5366.5119957007. The cubic root of 28799451 is about 306.5218252419.

The spelling of 28799451 in words is "twenty-eight million, seven hundred ninety-nine thousand, four hundred fifty-one".