28361254464 has 105 divisors (see below), whose sum is σ = 84107601787. Its totient is φ = 9449709696.

The previous prime is 28361254447. The next prime is 28361254567. The reversal of 28361254464 is 46445216382.

The square root of 28361254464 is 168408.

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

28361254464 is a `hidden beast` number, since 2 + 8 + 36 + 12 + 544 + 64 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12124207 + ... + 12126545.

Almost surely, 2^28361254464 is an apocalyptic number.

28361254464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

28361254464 is the 168408-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28361254464

28361254464 is an abundant number, since it is smaller than the sum of its proper divisors (55746347323).

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

28361254464 is an frugal number, since it uses more digits than its factorization.

28361254464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 2344 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The spelling of 28361254464 in words is "twenty-eight billion, three hundred sixty-one million, two hundred fifty-four thousand, four hundred sixty-four".