428820850 has 48 divisors (see below), whose sum is σ = 824768640. Its totient is φ = 165787200.

The previous prime is 428820841. The next prime is 428820853. The reversal of 428820850 is 58028824.

It is not an unprimeable number, because it can be changed into a prime (428820853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178759 + ... + 181141.

It is an arithmetic number, because the mean of its divisors is an integer number (17182680).

Almost surely, 2^428820850 is an apocalyptic number.

428820850 is a deficient number, since it is larger than the sum of its proper divisors (395947790).

428820850 is a wasteful number, since it uses less digits than its factorization.

428820850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 428820850 is about 20707.9900038608. The cubic root of 428820850 is about 754.0936743794.

The spelling of 428820850 in words is "four hundred twenty-eight million, eight hundred twenty thousand, eight hundred fifty".