428651782 has 16 divisors (see below), whose sum is σ = 722544480. Its totient is φ = 189237312.

The previous prime is 428651767. The next prime is 428651791. The reversal of 428651782 is 287156824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357807 + ... + 359002.

It is an arithmetic number, because the mean of its divisors is an integer number (45159030).

Almost surely, 2^428651782 is an apocalyptic number.

428651782 is a deficient number, since it is larger than the sum of its proper divisors (293892698).

428651782 is a wasteful number, since it uses less digits than its factorization.

428651782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716847.

The product of its digits is 215040, while the sum is 43.

The square root of 428651782 is about 20703.9074089893. The cubic root of 428651782 is about 753.9945577216.

The spelling of 428651782 in words is "four hundred twenty-eight million, six hundred fifty-one thousand, seven hundred eighty-two".