428720947184 has 10 divisors (see below), whose sum is σ = 830646835200. Its totient is φ = 214360473584.

The previous prime is 428720947183. The next prime is 428720947219. The reversal of 428720947184 is 481749027824.

It is a super-2 number, since 2×428720947184² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428720947183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13397529584 + ... + 13397529615.

It is an arithmetic number, because the mean of its divisors is an integer number (83064683520).

Almost surely, 2^428720947184 is an apocalyptic number.

It is an amenable number.

428720947184 is a deficient number, since it is larger than the sum of its proper divisors (401925888016).

428720947184 is a wasteful number, since it uses less digits than its factorization.

428720947184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26795059207 (or 26795059201 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 428720947184 in words is "four hundred twenty-eight billion, seven hundred twenty million, nine hundred forty-seven thousand, one hundred eighty-four".