428140706 has 8 divisors (see below), whose sum is σ = 733955520. Its totient is φ = 183488868.

The previous prime is 428140703. The next prime is 428140709. The reversal of 428140706 is 607041824.

It is an interprime number because it is at equal distance from previous prime (428140703) and next prime (428140709).

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

It is not an unprimeable number, because it can be changed into a prime (428140703) 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, 15290726 + ... + 15290753.

It is an arithmetic number, because the mean of its divisors is an integer number (91744440).

Almost surely, 2^428140706 is an apocalyptic number.

428140706 is a deficient number, since it is larger than the sum of its proper divisors (305814814).

428140706 is a wasteful number, since it uses less digits than its factorization.

428140706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30581488.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 428140706 is about 20691.5612267417. The cubic root of 428140706 is about 753.6947792153.

The spelling of 428140706 in words is "four hundred twenty-eight million, one hundred forty thousand, seven hundred six".