428037826 has 8 divisors (see below), whose sum is σ = 643659084. Its totient is φ = 213484800.

The previous prime is 428037791. The next prime is 428037839. The reversal of 428037826 is 628730824.

It can be written as a sum of positive squares in 2 ways, for example, as 276723225 + 151314601 = 16635^2 + 12301^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 266055 + ... + 267658.

Almost surely, 2^428037826 is an apocalyptic number.

428037826 is a deficient number, since it is larger than the sum of its proper divisors (215621258).

428037826 is a wasteful number, since it uses less digits than its factorization.

428037826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534116.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 428037826 is about 20689.0750397402. The cubic root of 428037826 is about 753.6344047251.

The spelling of 428037826 in words is "four hundred twenty-eight million, thirty-seven thousand, eight hundred twenty-six".