428078326 has 16 divisors (see below), whose sum is σ = 732189024. Its totient is φ = 185952384.

The previous prime is 428078311. The next prime is 428078333. The reversal of 428078326 is 623870824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483810 + ... + 484693.

It is an arithmetic number, because the mean of its divisors is an integer number (45761814).

Almost surely, 2^428078326 is an apocalyptic number.

428078326 is a deficient number, since it is larger than the sum of its proper divisors (304110698).

428078326 is a wasteful number, since it uses less digits than its factorization.

428078326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968535.

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

The square root of 428078326 is about 20690.0537940335. The cubic root of 428078326 is about 753.6581730535.

The spelling of 428078326 in words is "four hundred twenty-eight million, seventy-eight thousand, three hundred twenty-six".