28061403056 has 40 divisors (see below), whose sum is σ = 57885295104. Its totient is φ = 13132385280.

The previous prime is 28061403053. The next prime is 28061403079. The reversal of 28061403056 is 65030416082.

It is a super-2 number, since 2×28061403056² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28061403053) 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, 235760 + ... + 334223.

Almost surely, 2^28061403056 is an apocalyptic number.

It is an amenable number.

28061403056 is an abundant number, since it is smaller than the sum of its proper divisors (29823892048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28061403056 is a wasteful number, since it uses less digits than its factorization.

28061403056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570189 (or 570183 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 28061403056 in words is "twenty-eight billion, sixty-one million, four hundred three thousand, fifty-six".