28481962756 has 27 divisors (see below), whose sum is σ = 53980793013. Its totient is φ = 13143496080.

The previous prime is 28481962739. The next prime is 28481962757. The reversal of 28481962756 is 65726918482.

The square root of 28481962756 is 168766.

It is a perfect power (a square), and thus also a powerful number.

28481962756 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 4213308100 + 24268654656 = 64910^2 + 155784^2 .

It is a super-2 number, since 2×28481962756² (a number of 22 digits) contains 22 as substring.

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 28481962756.

It is not an unprimeable number, because it can be changed into a prime (28481962757) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4384671 + ... + 4391161.

Almost surely, 2^28481962756 is an apocalyptic number.

28481962756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28481962756 is the 168766-th square number.

It is an amenable number.

28481962756 is a deficient number, since it is larger than the sum of its proper divisors (25498830257).

28481962756 is an frugal number, since it uses more digits than its factorization.

28481962756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13012 (or 6506 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 58.

It can be divided in two parts, 2848 and 1962756, that added together give a square (1965604 = 1402²).

The spelling of 28481962756 in words is "twenty-eight billion, four hundred eighty-one million, nine hundred sixty-two thousand, seven hundred fifty-six".