428227518 has 16 divisors (see below), whose sum is σ = 906834960. Its totient is φ = 134345856.

The previous prime is 428227517. The next prime is 428227523. The reversal of 428227518 is 815722824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428227511) by changing a digit.

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, 2099053 + ... + 2099256.

It is an arithmetic number, because the mean of its divisors is an integer number (56677185).

Almost surely, 2^428227518 is an apocalyptic number.

428227518 is an abundant number, since it is smaller than the sum of its proper divisors (478607442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428227518 is a wasteful number, since it uses less digits than its factorization.

428227518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198331.

The product of its digits is 71680, while the sum is 39.

The square root of 428227518 is about 20693.6588838224. The cubic root of 428227518 is about 753.7457167758.

The spelling of 428227518 in words is "four hundred twenty-eight million, two hundred twenty-seven thousand, five hundred eighteen".