428541831 has 12 divisors (see below), whose sum is σ = 655417152. Its totient is φ = 268888896.

The previous prime is 428541811. The next prime is 428541847. The reversal of 428541831 is 138145824.

428541831 is a `hidden beast` number, since 428 + 54 + 183 + 1 = 666.

It is not a de Polignac number, because 428541831 - 2⁶ = 428541767 is a prime.

It is a super-2 number, since 2×428541831² = 367296201833665122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428541811) 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, 1400311 + ... + 1400616.

It is an arithmetic number, because the mean of its divisors is an integer number (54618096).

Almost surely, 2^428541831 is an apocalyptic number.

428541831 is a deficient number, since it is larger than the sum of its proper divisors (226875321).

428541831 is a wasteful number, since it uses less digits than its factorization.

428541831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800950 (or 2800947 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 428541831 is about 20701.2519186642. The cubic root of 428541831 is about 753.9300846082.

The spelling of 428541831 in words is "four hundred twenty-eight million, five hundred forty-one thousand, eight hundred thirty-one".