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16200023136 = 2531123798443
BaseRepresentation
bin11110001011001100…
…01011110001100000
31112211000012102221220
433011212023301200
5231134201220021
611235302415040
71112310632103
oct170546136140
945730172856
1016200023136
116963544180
123181431480
1316b234ac0b
14ad975c73a
1564c356cc6
hex3c598bc60

16200023136 has 192 divisors, whose sum is σ = 49026539520. Its totient is φ = 4635671040.

The previous prime is 16200023101. The next prime is 16200023141. The reversal of 16200023136 is 63132000261.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1914531 + ... + 1922973.

It is an arithmetic number, because the mean of its divisors is an integer number (255346560).

Almost surely, 216200023136 is an apocalyptic number.

16200023136 is a gapful number since it is divisible by the number (16) 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 16200023136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24513269760).

16200023136 is an abundant number, since it is smaller than the sum of its proper divisors (32826516384).

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

16200023136 is a wasteful number, since it uses less digits than its factorization.

16200023136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569 (or 8561 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 16200023136 its reverse (63132000261), we get a palindrome (79332023397).

It can be divided in two parts, 162000 and 23136, that added together give a triangular number (185136 = T608).

The spelling of 16200023136 in words is "sixteen billion, two hundred million, twenty-three thousand, one hundred thirty-six".