28613529 has 12 divisors (see below), whose sum is σ = 47235136. Its totient is φ = 16350552.

The previous prime is 28613491. The next prime is 28613537. The reversal of 28613529 is 92531682.

It is not a de Polignac number, because 28613529 - 2¹² = 28609433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28613493 and 28613502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28613539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227029 + ... + 227154.

Almost surely, 2^28613529 is an apocalyptic number.

It is an amenable number.

28613529 is a deficient number, since it is larger than the sum of its proper divisors (18621607).

28613529 is a wasteful number, since it uses less digits than its factorization.

28613529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454196 (or 454193 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28613529 is about 5349.1615230800. The cubic root of 28613529 is about 305.8607914789.

The spelling of 28613529 in words is "twenty-eight million, six hundred thirteen thousand, five hundred twenty-nine".