28733707 has 4 divisors (see below), whose sum is σ = 28853176. Its totient is φ = 28614240.

The previous prime is 28733701. The next prime is 28733717. The reversal of 28733707 is 70733782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28733707 - 2³ = 28733699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28733701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59373 + ... + 59854.

It is an arithmetic number, because the mean of its divisors is an integer number (7213294).

Almost surely, 2^28733707 is an apocalyptic number.

28733707 is a deficient number, since it is larger than the sum of its proper divisors (119469).

28733707 is a wasteful number, since it uses less digits than its factorization.

28733707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119468.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 28733707 is about 5360.3831019807. The cubic root of 28733707 is about 306.2884026811.

The spelling of 28733707 in words is "twenty-eight million, seven hundred thirty-three thousand, seven hundred seven".