428744973 has 16 divisors (see below), whose sum is σ = 590723072. Its totient is φ = 276318000.

The previous prime is 428744971. The next prime is 428744977. The reversal of 428744973 is 379447824.

It is not a de Polignac number, because 428744973 - 2¹ = 428744971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428744971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118278 + ... + 121848.

It is an arithmetic number, because the mean of its divisors is an integer number (36920192).

Almost surely, 2^428744973 is an apocalyptic number.

It is an amenable number.

428744973 is a deficient number, since it is larger than the sum of its proper divisors (161978099).

428744973 is a wasteful number, since it uses less digits than its factorization.

428744973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896.

The product of its digits is 1354752, while the sum is 48.

The square root of 428744973 is about 20706.1578521946. The cubic root of 428744973 is about 754.0491944675.

The spelling of 428744973 in words is "four hundred twenty-eight million, seven hundred forty-four thousand, nine hundred seventy-three".