28257217046 has 8 divisors (see below), whose sum is σ = 44879109480. Its totient is φ = 13297513888.

The previous prime is 28257217013. The next prime is 28257217073. The reversal of 28257217046 is 64071275282.

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

It is a super-2 number, since 2×28257217046² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28257216988 and 28257217006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415547276 + ... + 415547343.

It is an arithmetic number, because the mean of its divisors is an integer number (5609888685).

Almost surely, 2^28257217046 is an apocalyptic number.

28257217046 is a deficient number, since it is larger than the sum of its proper divisors (16621892434).

28257217046 is a wasteful number, since it uses less digits than its factorization.

28257217046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831094638.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 28257217046 in words is "twenty-eight billion, two hundred fifty-seven million, two hundred seventeen thousand, forty-six".