28729499 has 2 divisors, whose sum is σ = 28729500. Its totient is φ = 28729498.

The previous prime is 28729483. The next prime is 28729543. The reversal of 28729499 is 99492782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28729499 - 2⁴ = 28729483 is a prime.

It is a super-2 number, since 2×28729499² = 1650768225582002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28729409) 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 as a sum of consecutive naturals, namely, 14364749 + 14364750.

It is an arithmetic number, because the mean of its divisors is an integer number (14364750).

Almost surely, 2^28729499 is an apocalyptic number.

28729499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28729499 is an equidigital number, since it uses as much as digits as its factorization.

28729499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 28729499 is about 5359.9905783499. The cubic root of 28729499 is about 306.2734501549.

The spelling of 28729499 in words is "twenty-eight million, seven hundred twenty-nine thousand, four hundred ninety-nine".