28730029 has 8 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 28431600.

The previous prime is 28730021. The next prime is 28730047. The reversal of 28730029 is 92003782.

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

It is a cyclic number.

It is not a de Polignac number, because 28730029 - 2³ = 28730021 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 (28730021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66444 + ... + 66874.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^28730029 is an apocalyptic number.

It is an amenable number.

28730029 is a deficient number, since it is larger than the sum of its proper divisors (300371).

28730029 is a wasteful number, since it uses less digits than its factorization.

28730029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 28730029 is about 5360.0400185073. The cubic root of 28730029 is about 306.2753335145.

The spelling of 28730029 in words is "twenty-eight million, seven hundred thirty thousand, twenty-nine".