8186742400 has 96 divisors (see below), whose sum is σ = 20281826880. Its totient is φ = 3265305600.

The previous prime is 8186742371. The next prime is 8186742407. The reversal of 8186742400 is 42476818.

It is a super-2 number, since 2×8186742400² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (8186742407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1170915 + ... + 1177885.

It is an arithmetic number, because the mean of its divisors is an integer number (211269030).

Almost surely, 2^8186742400 is an apocalyptic number.

8186742400 is a gapful number since it is divisible by the number (80) 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 8186742400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10140913440).

8186742400 is an abundant number, since it is smaller than the sum of its proper divisors (12095084480).

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

8186742400 is a wasteful number, since it uses less digits than its factorization.

8186742400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362 (or 7345 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 8186742400 is about 90480.6189191917. The cubic root of 8186742400 is about 2015.4423270623.

The spelling of 8186742400 in words is "eight billion, one hundred eighty-six million, seven hundred forty-two thousand, four hundred".