428356494 has 24 divisors (see below), whose sum is σ = 945619272. Its totient is φ = 140091120.

The previous prime is 428356483. The next prime is 428356517. The reversal of 428356494 is 494653824.

428356494 is a `hidden beast` number, since 4 + 2 + 83 + 564 + 9 + 4 = 666.

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 11 ways as a sum of consecutive naturals, for example, 223552 + ... + 225459.

It is an arithmetic number, because the mean of its divisors is an integer number (39400803).

Almost surely, 2^428356494 is an apocalyptic number.

428356494 is an abundant number, since it is smaller than the sum of its proper divisors (517262778).

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

428356494 is a wasteful number, since it uses less digits than its factorization.

428356494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449072 (or 449069 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 428356494 is about 20696.7749661632. The cubic root of 428356494 is about 753.8213816543.

The spelling of 428356494 in words is "four hundred twenty-eight million, three hundred fifty-six thousand, four hundred ninety-four".