428340207 has 8 divisors (see below), whose sum is σ = 571508784. Its totient is φ = 285365888.

The previous prime is 428340203. The next prime is 428340217. The reversal of 428340207 is 702043824.

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

It is a cyclic number.

It is not a de Polignac number, because 428340207 - 2² = 428340203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428340203) 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, 43338 + ... + 52295.

It is an arithmetic number, because the mean of its divisors is an integer number (71438598).

Almost surely, 2^428340207 is an apocalyptic number.

428340207 is a deficient number, since it is larger than the sum of its proper divisors (143168577).

428340207 is a wasteful number, since it uses less digits than its factorization.

428340207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97129.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 428340207 is about 20696.3814953242. The cubic root of 428340207 is about 753.8118275838.

The spelling of 428340207 in words is "four hundred twenty-eight million, three hundred forty thousand, two hundred seven".