28860029 has 4 divisors (see below), whose sum is σ = 31483680. Its totient is φ = 26236380.

The previous prime is 28860019. The next prime is 28860059. The reversal of 28860029 is 92006882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28860029 - 2¹² = 28855933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28860019) 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, 1311809 + ... + 1311830.

It is an arithmetic number, because the mean of its divisors is an integer number (7870920).

Almost surely, 2^28860029 is an apocalyptic number.

It is an amenable number.

28860029 is a deficient number, since it is larger than the sum of its proper divisors (2623651).

28860029 is a wasteful number, since it uses less digits than its factorization.

28860029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623650.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28860029 is about 5372.1531065300. The cubic root of 28860029 is about 306.7365917789.

The spelling of 28860029 in words is "twenty-eight million, eight hundred sixty thousand, twenty-nine".