428330771 has 12 divisors (see below), whose sum is σ = 488475960. Its totient is φ = 372456480.

The previous prime is 428330767. The next prime is 428330801. The reversal of 428330771 is 177033824.

It is not a de Polignac number, because 428330771 - 2² = 428330767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428330701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30986 + ... + 42623.

It is an arithmetic number, because the mean of its divisors is an integer number (40706330).

Almost surely, 2^428330771 is an apocalyptic number.

428330771 is a deficient number, since it is larger than the sum of its proper divisors (60145189).

428330771 is a wasteful number, since it uses less digits than its factorization.

428330771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73666 (or 73643 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 428330771 is about 20696.1535315140. The cubic root of 428330771 is about 753.8062922480.

The spelling of 428330771 in words is "four hundred twenty-eight million, three hundred thirty thousand, seven hundred seventy-one".