23147784000 has 504 divisors, whose sum is σ = 91049651784. Its totient is φ = 5609472000.

The previous prime is 23147783959. The next prime is 23147784007. The reversal of 23147784000 is 48774132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 424030464 + 22723753536 = 20592^2 + 150744^2 .

It is a super-2 number, since 2×23147784000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23147784007) 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 71 ways as a sum of consecutive naturals, for example, 8710672 + ... + 8713328.

It is an arithmetic number, because the mean of its divisors is an integer number (180654071).

Almost surely, 2^23147784000 is an apocalyptic number.

23147784000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23147784000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45524825892).

23147784000 is an abundant number, since it is smaller than the sum of its proper divisors (67901867784).

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

23147784000 is a wasteful number, since it uses less digits than its factorization.

23147784000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 23147784000 in words is "twenty-three billion, one hundred forty-seven million, seven hundred eighty-four thousand".