28717029 has 48 divisors (see below), whose sum is σ = 48657024. Its totient is φ = 16128000.

The previous prime is 28717021. The next prime is 28717079. The reversal of 28717029 is 92071782.

It is not a de Polignac number, because 28717029 - 2³ = 28717021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28716984 and 28717002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28717021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 190104 + ... + 190254.

It is an arithmetic number, because the mean of its divisors is an integer number (1013688).

Almost surely, 2^28717029 is an apocalyptic number.

It is an amenable number.

28717029 is a deficient number, since it is larger than the sum of its proper divisors (19939995).

28717029 is a wasteful number, since it uses less digits than its factorization.

28717029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 28717029 is about 5358.8272037826. The cubic root of 28717029 is about 306.2291312171.

The spelling of 28717029 in words is "twenty-eight million, seven hundred seventeen thousand, twenty-nine".