428207973 has 8 divisors (see below), whose sum is σ = 571044768. Its totient is φ = 285421584.

The previous prime is 428207947. The next prime is 428208031. The reversal of 428207973 is 379702824.

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

It is not a de Polignac number, because 428207973 - 2⁶ = 428207909 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428207903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17490 + ... + 34092.

It is an arithmetic number, because the mean of its divisors is an integer number (71380596).

Almost surely, 2^428207973 is an apocalyptic number.

It is an amenable number.

428207973 is a deficient number, since it is larger than the sum of its proper divisors (142836795).

428207973 is a wasteful number, since it uses less digits than its factorization.

428207973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 428207973 is about 20693.1866323193. The cubic root of 428207973 is about 753.7342492081.

The spelling of 428207973 in words is "four hundred twenty-eight million, two hundred seven thousand, nine hundred seventy-three".