428601707 has 4 divisors (see below), whose sum is σ = 428721216. Its totient is φ = 428482200.

The previous prime is 428601703. The next prime is 428601709. The reversal of 428601707 is 707106824.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 428601707 - 2² = 428601703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428601703) 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 3 ways as a sum of consecutive naturals, for example, 54203 + ... + 61604.

It is an arithmetic number, because the mean of its divisors is an integer number (107180304).

Almost surely, 2^428601707 is an apocalyptic number.

428601707 is a deficient number, since it is larger than the sum of its proper divisors (119509).

428601707 is a wasteful number, since it uses less digits than its factorization.

428601707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119508.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 428601707 is about 20702.6980608809. The cubic root of 428601707 is about 753.9651960895.

The spelling of 428601707 in words is "four hundred twenty-eight million, six hundred one thousand, seven hundred seven".