428077966 has 8 divisors (see below), whose sum is σ = 657778464. Its totient is φ = 208818480.

The previous prime is 428077921. The next prime is 428077967. The reversal of 428077966 is 669770824.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428077967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2610150 + ... + 2610313.

It is an arithmetic number, because the mean of its divisors is an integer number (82222308).

Almost surely, 2^428077966 is an apocalyptic number.

428077966 is a deficient number, since it is larger than the sum of its proper divisors (229700498).

428077966 is a wasteful number, since it uses less digits than its factorization.

428077966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220506.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 428077966 is about 20690.0450941993. The cubic root of 428077966 is about 753.6579617861.

The spelling of 428077966 in words is "four hundred twenty-eight million, seventy-seven thousand, nine hundred sixty-six".