428440166 has 32 divisors (see below), whose sum is σ = 802690560. Its totient is φ = 166622400.

The previous prime is 428440153. The next prime is 428440169. The reversal of 428440166 is 661044824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428440169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94970 + ... + 99378.

It is an arithmetic number, because the mean of its divisors is an integer number (25084080).

Almost surely, 2^428440166 is an apocalyptic number.

428440166 is a deficient number, since it is larger than the sum of its proper divisors (374250394).

428440166 is a wasteful number, since it uses less digits than its factorization.

428440166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 428440166 is about 20698.7962451926. The cubic root of 428440166 is about 753.8704604295.

The spelling of 428440166 in words is "four hundred twenty-eight million, four hundred forty thousand, one hundred sixty-six".