428034956581 has 8 divisors (see below), whose sum is σ = 442992614400. Its totient is φ = 413090487600.

The previous prime is 428034956551. The next prime is 428034956651. The reversal of 428034956581 is 185659430824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428034956581 - 2²⁹ = 427498085669 is a prime.

It is a super-2 number, since 2×428034956581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428034956551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3231145 + ... + 3361006.

It is an arithmetic number, because the mean of its divisors is an integer number (55374076800).

Almost surely, 2^428034956581 is an apocalyptic number.

It is an amenable number.

428034956581 is a deficient number, since it is larger than the sum of its proper divisors (14957657819).

428034956581 is a wasteful number, since it uses less digits than its factorization.

428034956581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6594419.

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 428034956581 in words is "four hundred twenty-eight billion, thirty-four million, nine hundred fifty-six thousand, five hundred eighty-one".