428272744 has 16 divisors (see below), whose sum is σ = 803813220. Its totient is φ = 213922560.

The previous prime is 428272727. The next prime is 428272763. The reversal of 428272744 is 447272824.

It can be written as a sum of positive squares in 2 ways, for example, as 410548644 + 17724100 = 20262^2 + 4210^2 .

It is a junction number, because it is equal to n+sod(n) for n = 428272697 and 428272706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18049 + ... + 34384.

Almost surely, 2^428272744 is an apocalyptic number.

It is an amenable number.

428272744 is a deficient number, since it is larger than the sum of its proper divisors (375540476).

428272744 is a wasteful number, since it uses less digits than its factorization.

428272744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53460 (or 53456 counting only the distinct ones).

The product of its digits is 200704, while the sum is 40.

The square root of 428272744 is about 20694.7516051776. The cubic root of 428272744 is about 753.7722507267.

The spelling of 428272744 in words is "four hundred twenty-eight million, two hundred seventy-two thousand, seven hundred forty-four".