428686527 has 8 divisors (see below), whose sum is σ = 572250880. Its totient is φ = 285456600.

The previous prime is 428686523. The next prime is 428686541. The reversal of 428686527 is 725686824.

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

It is not a de Polignac number, because 428686527 - 2² = 428686523 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 (428686523) 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, 80599 + ... + 85752.

It is an arithmetic number, because the mean of its divisors is an integer number (71531360).

Almost surely, 2^428686527 is an apocalyptic number.

428686527 is a deficient number, since it is larger than the sum of its proper divisors (143564353).

428686527 is a wasteful number, since it uses less digits than its factorization.

428686527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167213.

The product of its digits is 1290240, while the sum is 48.

The square root of 428686527 is about 20704.7464848039. The cubic root of 428686527 is about 754.0149292168.

The spelling of 428686527 in words is "four hundred twenty-eight million, six hundred eighty-six thousand, five hundred twenty-seven".