28300429 has 8 divisors (see below), whose sum is σ = 28756728. Its totient is φ = 27847680.

The previous prime is 28300423. The next prime is 28300451. The reversal of 28300429 is 92400382.

It can be written as a sum of positive squares in 4 ways, for example, as 10432900 + 17867529 = 3230^2 + 4227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28300429 - 2¹⁹ = 27776141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28300397 and 28300406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18369 + ... + 19849.

It is an arithmetic number, because the mean of its divisors is an integer number (3594591).

Almost surely, 2^28300429 is an apocalyptic number.

It is an amenable number.

28300429 is a deficient number, since it is larger than the sum of its proper divisors (456299).

28300429 is a wasteful number, since it uses less digits than its factorization.

28300429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 28300429 is about 5319.8147524138. The cubic root of 28300429 is about 304.7410827823.

The spelling of 28300429 in words is "twenty-eight million, three hundred thousand, four hundred twenty-nine".