28485968742 has 48 divisors (see below), whose sum is σ = 76949114112. Its totient is φ = 7398952560.

The previous prime is 28485968737. The next prime is 28485968743. The reversal of 28485968742 is 24786958482.

28485968742 is a `hidden beast` number, since 28 + 485 + 9 + 68 + 74 + 2 = 666.

It is a super-2 number, since 2×28485968742² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 28485968742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485968743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10274938 + ... + 10277709.

It is an arithmetic number, because the mean of its divisors is an integer number (1603106544).

Almost surely, 2^28485968742 is an apocalyptic number.

28485968742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28485968742 is an abundant number, since it is smaller than the sum of its proper divisors (48463145370).

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

28485968742 is a wasteful number, since it uses less digits than its factorization.

28485968742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552673 (or 20552670 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The spelling of 28485968742 in words is "twenty-eight billion, four hundred eighty-five million, nine hundred sixty-eight thousand, seven hundred forty-two".