28526729 has 8 divisors (see below), whose sum is σ = 35565888. Its totient is φ = 22228560.

The previous prime is 28526723. The next prime is 28526767. The reversal of 28526729 is 92762582.

28526729 = T₈₂₂ + T₈₂₃ + ... + T₈₉₈.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28526729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28526723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185162 + ... + 185315.

It is an arithmetic number, because the mean of its divisors is an integer number (4445736).

Almost surely, 2^28526729 is an apocalyptic number.

It is an amenable number.

28526729 is a deficient number, since it is larger than the sum of its proper divisors (7039159).

28526729 is a wasteful number, since it uses less digits than its factorization.

28526729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370495.

The product of its digits is 120960, while the sum is 41.

The square root of 28526729 is about 5341.0419395470. The cubic root of 28526729 is about 305.5511989143.

The spelling of 28526729 in words is "twenty-eight million, five hundred twenty-six thousand, seven hundred twenty-nine".