28729467 has 36 divisors (see below), whose sum is σ = 46656064. Its totient is φ = 16917120.

The previous prime is 28729451. The next prime is 28729483. The reversal of 28729467 is 76492782.

It is an interprime number because it is at equal distance from previous prime (28729451) and next prime (28729483).

It is not a de Polignac number, because 28729467 - 2⁴ = 28729451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28729417) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 322759 + ... + 322847.

Almost surely, 2^28729467 is an apocalyptic number.

28729467 is a deficient number, since it is larger than the sum of its proper divisors (17926597).

28729467 is a wasteful number, since it uses less digits than its factorization.

28729467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 136 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28729467 is about 5359.9875932692. The cubic root of 28729467 is about 306.2733364419.

The spelling of 28729467 in words is "twenty-eight million, seven hundred twenty-nine thousand, four hundred sixty-seven".