428230007 has 4 divisors (see below), whose sum is σ = 433650720. Its totient is φ = 422809296.

The previous prime is 428229973. The next prime is 428230009. The reversal of 428230007 is 700032824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428230007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428230009) 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, 2710238 + ... + 2710395.

It is an arithmetic number, because the mean of its divisors is an integer number (108412680).

Almost surely, 2^428230007 is an apocalyptic number.

428230007 is a deficient number, since it is larger than the sum of its proper divisors (5420713).

428230007 is an equidigital number, since it uses as much as digits as its factorization.

428230007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420712.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 428230007 is about 20693.7190229306. The cubic root of 428230007 is about 753.7471771128.

The spelling of 428230007 in words is "four hundred twenty-eight million, two hundred thirty thousand, seven".