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16231230400 = 2652721122959
BaseRepresentation
bin11110001110111010…
…01110101111000000
31112220011220221021111
433013131032233000
5231220143333100
611242335333104
71113140116300
oct170735165700
945804827244
1016231230400
11697a119700
12318b981194
1316b8956558
14add963600
1564ee6d6ba
hex3c774ebc0

16231230400 has 756 divisors, whose sum is σ = 53723514600. Its totient is φ = 4801843200.

The previous prime is 16231230397. The next prime is 16231230451. The reversal of 16231230400 is 403213261.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 107 ways as a sum of consecutive naturals, for example, 275105571 + ... + 275105629.

It is an arithmetic number, because the mean of its divisors is an integer number (71062850).

Almost surely, 216231230400 is an apocalyptic number.

16231230400 is a gapful number since it is divisible by the number (10) 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 16231230400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26861757300).

16231230400 is an abundant number, since it is smaller than the sum of its proper divisors (37492284200).

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

16231230400 is a wasteful number, since it uses less digits than its factorization.

16231230400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 16231230400 its reverse (403213261), we get a palindrome (16634443661).

The spelling of 16231230400 in words is "sixteen billion, two hundred thirty-one million, two hundred thirty thousand, four hundred".