28213249024 has 99 divisors (see below), whose sum is σ = 58735293591. Its totient is φ = 13544939520.

The previous prime is 28213248997. The next prime is 28213249033. The reversal of 28213249024 is 42094231282.

It is a happy number.

The square root of 28213249024 is 167968.

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

It can be written as a sum of positive squares in 4 ways, for example, as 10492314624 + 17720934400 = 102432^2 + 133120^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 155874214 + ... + 155874394.

Almost surely, 2^28213249024 is an apocalyptic number.

28213249024 is the 167968-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28213249024

28213249024 is an abundant number, since it is smaller than the sum of its proper divisors (30522044567).

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

28213249024 is an frugal number, since it uses more digits than its factorization.

28213249024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 28213249024 in words is "twenty-eight billion, two hundred thirteen million, two hundred forty-nine thousand, twenty-four".