28392250000 has 105 divisors (see below), whose sum is σ = 68966246127. Its totient is φ = 11323200000.

The previous prime is 28392249997. The next prime is 28392250009. The reversal of 28392250000 is 5229382.

The square root of 28392250000 is 168500.

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

It can be written as a sum of positive squares in 10 ways, for example, as 17579577744 + 10812672256 = 132588^2 + 103984^2 .

It is a super-2 number, since 2×28392250000² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28392250009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 84249832 + ... + 84250168.

Almost surely, 2^28392250000 is an apocalyptic number.

28392250000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

28392250000 is the 168500-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28392250000

28392250000 is an abundant number, since it is smaller than the sum of its proper divisors (40573996127).

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

28392250000 is an frugal number, since it uses more digits than its factorization.

28392250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 28392250000 its reverse (5229382), we get a palindrome (28397479382).

The spelling of 28392250000 in words is "twenty-eight billion, three hundred ninety-two million, two hundred fifty thousand".