28307234 has 8 divisors (see below), whose sum is σ = 42483648. Its totient is φ = 14146020.

The previous prime is 28307231. The next prime is 28307243. The reversal of 28307234 is 43270382.

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

It is a junction number, because it is equal to n+sod(n) for n = 28307197 and 28307206.

It is not an unprimeable number, because it can be changed into a prime (28307231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4379 + ... + 8705.

It is an arithmetic number, because the mean of its divisors is an integer number (5310456).

Almost surely, 2^28307234 is an apocalyptic number.

28307234 is a deficient number, since it is larger than the sum of its proper divisors (14176414).

28307234 is a wasteful number, since it uses less digits than its factorization.

28307234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 28307234 is about 5320.4543039105. The cubic root of 28307234 is about 304.7655064035.

The spelling of 28307234 in words is "twenty-eight million, three hundred seven thousand, two hundred thirty-four".