428693770 has 32 divisors (see below), whose sum is σ = 816583680. Its totient is φ = 161588160.

The previous prime is 428693753. The next prime is 428693773. The reversal of 428693770 is 77396824.

It is a self number, because there is not a number n which added to its sum of digits gives 428693770.

It is not an unprimeable number, because it can be changed into a prime (428693773) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30384 + ... + 42196.

It is an arithmetic number, because the mean of its divisors is an integer number (25518240).

Almost surely, 2^428693770 is an apocalyptic number.

428693770 is a deficient number, since it is larger than the sum of its proper divisors (387889910).

428693770 is a wasteful number, since it uses less digits than its factorization.

428693770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12030.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 428693770 is about 20704.9213956489. The cubic root of 428693770 is about 754.0191757536.

The spelling of 428693770 in words is "four hundred twenty-eight million, six hundred ninety-three thousand, seven hundred seventy".