428318344 has 8 divisors (see below), whose sum is σ = 803096910. Its totient is φ = 214159168.

The previous prime is 428318339. The next prime is 428318369. The reversal of 428318344 is 443813824.

It can be written as a sum of positive squares in only one way, i.e., 422795844 + 5522500 = 20562^2 + 2350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26769889 + ... + 26769904.

Almost surely, 2^428318344 is an apocalyptic number.

It is an amenable number.

428318344 is a deficient number, since it is larger than the sum of its proper divisors (374778566).

428318344 is a wasteful number, since it uses less digits than its factorization.

428318344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53539799 (or 53539795 counting only the distinct ones).

The product of its digits is 73728, while the sum is 37.

The square root of 428318344 is about 20695.8533044666. The cubic root of 428318344 is about 753.7990022111.

The spelling of 428318344 in words is "four hundred twenty-eight million, three hundred eighteen thousand, three hundred forty-four".