28730067 has 8 divisors (see below), whose sum is σ = 38608896. Its totient is φ = 19002312.

The previous prime is 28730057. The next prime is 28730077. The reversal of 28730067 is 76003782.

It is an interprime number because it is at equal distance from previous prime (28730057) and next prime (28730077).

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

It is not a de Polignac number, because 28730067 - 2²⁴ = 11952851 is a prime.

It is a super-4 number, since 4×28730067⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (28730047) 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, 37323 + ... + 38084.

It is an arithmetic number, because the mean of its divisors is an integer number (4826112).

Almost surely, 2^28730067 is an apocalyptic number.

28730067 is a deficient number, since it is larger than the sum of its proper divisors (9878829).

28730067 is a wasteful number, since it uses less digits than its factorization.

28730067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75537.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 28730067 is about 5360.0435632558. The cubic root of 28730067 is about 306.2754685469.

The spelling of 28730067 in words is "twenty-eight million, seven hundred thirty thousand, sixty-seven".