28733667 has 8 divisors (see below), whose sum is σ = 38351040. Its totient is φ = 19136040.

The previous prime is 28733657. The next prime is 28733699. The reversal of 28733667 is 76633782.

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

It is not a de Polignac number, because 28733667 - 2²² = 24539363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28733657) 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, 1117 + ... + 7662.

It is an arithmetic number, because the mean of its divisors is an integer number (4793880).

Almost surely, 2^28733667 is an apocalyptic number.

28733667 is a deficient number, since it is larger than the sum of its proper divisors (9617373).

28733667 is a wasteful number, since it uses less digits than its factorization.

28733667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9873.

The product of its digits is 254016, while the sum is 42.

The square root of 28733667 is about 5360.3793709028. The cubic root of 28733667 is about 306.2882605537.

The spelling of 28733667 in words is "twenty-eight million, seven hundred thirty-three thousand, six hundred sixty-seven".