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20195136 = 2633132931
BaseRepresentation
bin100110100001…
…0011101000000
31102000000112000
41031002131000
520132221021
62000504000
7333440643
oct115023500
942000460
1020195136
11104439a5
12691b000
1342511b0
142979a5a
151b8db26
hex1342740

20195136 has 224 divisors, whose sum is σ = 68275200. Its totient is φ = 5806080.

The previous prime is 20195111. The next prime is 20195137. The reversal of 20195136 is 63159102.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20195137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651441 + ... + 651471.

It is an arithmetic number, because the mean of its divisors is an integer number (304800).

Almost surely, 220195136 is an apocalyptic number.

20195136 is a gapful number since it is divisible by the number (26) 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 20195136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34137600).

20195136 is an abundant number, since it is smaller than the sum of its proper divisors (48080064).

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

20195136 is a wasteful number, since it uses less digits than its factorization.

20195136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 20195136 is about 4493.8998653731. The cubic root of 20195136 is about 272.3217070108.

The spelling of 20195136 in words is "twenty million, one hundred ninety-five thousand, one hundred thirty-six".