28529697 has 16 divisors (see below), whose sum is σ = 45762560. Its totient is φ = 15444432.

The previous prime is 28529681. The next prime is 28529713. The reversal of 28529697 is 79692582.

It is an interprime number because it is at equal distance from previous prime (28529681) and next prime (28529713).

It is not a de Polignac number, because 28529697 - 2⁴ = 28529681 is a prime.

It is a super-2 number, since 2×28529697² = 1627887221823618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28529617) 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 15 ways as a sum of consecutive naturals, for example, 35353 + ... + 36150.

It is an arithmetic number, because the mean of its divisors is an integer number (2860160).

Almost surely, 2^28529697 is an apocalyptic number.

It is an amenable number.

28529697 is a deficient number, since it is larger than the sum of its proper divisors (17232863).

28529697 is a wasteful number, since it uses less digits than its factorization.

28529697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71532.

The product of its digits is 544320, while the sum is 48.

The square root of 28529697 is about 5341.3197807284. The cubic root of 28529697 is about 305.5617953449.

The spelling of 28529697 in words is "twenty-eight million, five hundred twenty-nine thousand, six hundred ninety-seven".