28529029 has 4 divisors (see below), whose sum is σ = 28996780. Its totient is φ = 28061280.

The previous prime is 28529027. The next prime is 28529041. The reversal of 28529029 is 92092582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 332929 + 28196100 = 577^2 + 5310^2 .

It is a cyclic number.

It is not a de Polignac number, because 28529029 - 2¹ = 28529027 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28529027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233784 + ... + 233905.

It is an arithmetic number, because the mean of its divisors is an integer number (7249195).

Almost surely, 2^28529029 is an apocalyptic number.

It is an amenable number.

28529029 is a deficient number, since it is larger than the sum of its proper divisors (467751).

28529029 is an equidigital number, since it uses as much as digits as its factorization.

28529029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467750.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28529029 is about 5341.2572490005. The cubic root of 28529029 is about 305.5594104980.

It can be divided in two parts, 2852 and 9029, that added together give a square (11881 = 109²).

The spelling of 28529029 in words is "twenty-eight million, five hundred twenty-nine thousand, twenty-nine".