428787834 has 8 divisors (see below), whose sum is σ = 857575680. Its totient is φ = 142929276.

The previous prime is 428787811. The next prime is 428787851. The reversal of 428787834 is 438787824.

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

428787834 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35732314 + ... + 35732325.

It is an arithmetic number, because the mean of its divisors is an integer number (107196960).

Almost surely, 2^428787834 is an apocalyptic number.

428787834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428787834 is a wasteful number, since it uses less digits than its factorization.

428787834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71464644.

The product of its digits is 2408448, while the sum is 51.

The square root of 428787834 is about 20707.1928082973. The cubic root of 428787834 is about 754.0743206906.

The spelling of 428787834 in words is "four hundred twenty-eight million, seven hundred eighty-seven thousand, eight hundred thirty-four".