428379256 has 8 divisors (see below), whose sum is σ = 803211120. Its totient is φ = 214189624.

The previous prime is 428379251. The next prime is 428379269. The reversal of 428379256 is 652973824.

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

It is a super-2 number, since 2×428379256² = 367017573942227072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428379251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26773696 + ... + 26773711.

It is an arithmetic number, because the mean of its divisors is an integer number (100401390).

Almost surely, 2^428379256 is an apocalyptic number.

It is an amenable number.

428379256 is a deficient number, since it is larger than the sum of its proper divisors (374831864).

428379256 is a wasteful number, since it uses less digits than its factorization.

428379256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53547413 (or 53547409 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 428379256 is about 20697.3248512942. The cubic root of 428379256 is about 753.8347336003.

The spelling of 428379256 in words is "four hundred twenty-eight million, three hundred seventy-nine thousand, two hundred fifty-six".