28240130304 has 189 divisors, whose sum is σ = 84734082853. Its totient is φ = 9389177856.

The previous prime is 28240130263. The next prime is 28240130311. The reversal of 28240130304 is 40303104282.

The square root of 28240130304 is 168048.

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

It can be written as a sum of positive squares in only one way, i.e., 6666395904 + 21573734400 = 81648^2 + 146880^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 72596542 + ... + 72596930.

Almost surely, 2^28240130304 is an apocalyptic number.

28240130304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

28240130304 is the 168048-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28240130304

28240130304 is an abundant number, since it is smaller than the sum of its proper divisors (56493952549).

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

28240130304 is an frugal number, since it uses more digits than its factorization.

28240130304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 28240130304 its reverse (40303104282), we get a palindrome (68543234586).

The spelling of 28240130304 in words is "twenty-eight billion, two hundred forty million, one hundred thirty thousand, three hundred four".