23851228947984 has 45 divisors (see below), whose sum is σ = 66750478361229. Its totient is φ = 7950390114240.

The previous prime is 23851228947979. The next prime is 23851228948007. The reversal of 23851228947984 is 48974982215832.

The square root of 23851228947984 is 4883772.

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

23851228947984 is a `hidden beast` number, since 2 + 3 + 8 + 51 + 2 + 28 + 9 + 479 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16139277786384 + 7711951161600 = 4017372^2 + 2777040^2 .

It is a super-2 number, since 2×23851228947984² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 58401774 + ... + 58808754.

Almost surely, 2^{23851228947984} is an apocalyptic number.

23851228947984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

23851228947984 is the 4883772-nd square number.

It is an amenable number.

23851228947984 is an abundant number, since it is smaller than the sum of its proper divisors (42899249413245).

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

23851228947984 is an frugal number, since it uses more digits than its factorization.

23851228947984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813976 (or 406986 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 23851228947984 in words is "twenty-three trillion, eight hundred fifty-one billion, two hundred twenty-eight million, nine hundred forty-seven thousand, nine hundred eighty-four".