428615834 has 8 divisors (see below), whose sum is σ = 645369120. Its totient is φ = 213492796.

The previous prime is 428615819. The next prime is 428615839. The reversal of 428615834 is 438516824.

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

It is a junction number, because it is equal to n+sod(n) for n = 428615791 and 428615800.

It is not an unprimeable number, because it can be changed into a prime (428615839) 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, 406904 + ... + 407955.

It is an arithmetic number, because the mean of its divisors is an integer number (80671140).

Almost surely, 2^428615834 is an apocalyptic number.

428615834 is a deficient number, since it is larger than the sum of its proper divisors (216753286).

428615834 is a wasteful number, since it uses less digits than its factorization.

428615834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815124.

The product of its digits is 184320, while the sum is 41.

The square root of 428615834 is about 20703.0392454828. The cubic root of 428615834 is about 753.9734797315.

The spelling of 428615834 in words is "four hundred twenty-eight million, six hundred fifteen thousand, eight hundred thirty-four".