28233407 has 8 divisors (see below), whose sum is σ = 28717920. Its totient is φ = 27751680.

The previous prime is 28233353. The next prime is 28233409. The reversal of 28233407 is 70433282.

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

It is not a de Polignac number, because 28233407 - 2¹⁸ = 27971263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28233407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28233409) 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, 31607 + ... + 32487.

It is an arithmetic number, because the mean of its divisors is an integer number (3589740).

Almost surely, 2^28233407 is an apocalyptic number.

28233407 is a deficient number, since it is larger than the sum of its proper divisors (484513).

28233407 is an equidigital number, since it uses as much as digits as its factorization.

28233407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393.

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

The square root of 28233407 is about 5313.5117389538. The cubic root of 28233407 is about 304.5003266992.

Adding to 28233407 its reverse (70433282), we get a palindrome (98666689).

The spelling of 28233407 in words is "twenty-eight million, two hundred thirty-three thousand, four hundred seven".