428800861 has 8 divisors (see below), whose sum is σ = 435852800. Its totient is φ = 421789680.

The previous prime is 428800831. The next prime is 428800927. The reversal of 428800861 is 168008824.

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 428800861 - 2⁹ = 428800349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428800861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428800811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11395 + ... + 31423.

It is an arithmetic number, because the mean of its divisors is an integer number (54481600).

Almost surely, 2^428800861 is an apocalyptic number.

It is an amenable number.

428800861 is a deficient number, since it is larger than the sum of its proper divisors (7051939).

428800861 is a wasteful number, since it uses less digits than its factorization.

428800861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20379.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 428800861 is about 20707.5073584437. The cubic root of 428800861 is about 754.0819571221.

The spelling of 428800861 in words is "four hundred twenty-eight million, eight hundred thousand, eight hundred sixty-one".