28423262464 has 81 divisors (see below), whose sum is σ = 58380197071. Its totient is φ = 13811056640.

The previous prime is 28423262431. The next prime is 28423262467. The reversal of 28423262464 is 46426232482.

The square root of 28423262464 is 168592.

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 263737600 + 28159524864 = 16240^2 + 167808^2 .

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 28423262464.

It is not an unprimeable number, because it can be changed into a prime (28423262467) 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, 110596224 + ... + 110596480.

Almost surely, 2^28423262464 is an apocalyptic number.

28423262464 is the 168592-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28423262464

28423262464 is an abundant number, since it is smaller than the sum of its proper divisors (29956934607).

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

28423262464 is an frugal number, since it uses more digits than its factorization.

28423262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 300 counting only the distinct ones).

The product of its digits is 884736, while the sum is 43.

The spelling of 28423262464 in words is "twenty-eight billion, four hundred twenty-three million, two hundred sixty-two thousand, four hundred sixty-four".