Search a number
-
+
120638525670 = 232513223675147
BaseRepresentation
bin111000001011010011…
…1011101000011100110
3102112101111200002001100
41300112213131003212
53434031430310140
6131230502140530
711500351356165
oct1602647350346
9375344602040
10120638525670
1147187336993
121b469721746
13b4b7581700
145ba607b3dc
153211083530
hex1c169dd0e6

120638525670 has 288 divisors, whose sum is σ = 359770574592. Its totient is φ = 27975138048.

The previous prime is 120638525629. The next prime is 120638525723. The reversal of 120638525670 is 76525836021.

120638525670 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 3 + 85 + 2 + 567 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 143 ways as a sum of consecutive naturals, for example, 23436037 + ... + 23441183.

It is an arithmetic number, because the mean of its divisors is an integer number (1249203384).

Almost surely, 2120638525670 is an apocalyptic number.

120638525670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120638525670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179885287296).

120638525670 is an abundant number, since it is smaller than the sum of its proper divisors (239132048922).

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

120638525670 is a wasteful number, since it uses less digits than its factorization.

120638525670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 120638525670 in words is "one hundred twenty billion, six hundred thirty-eight million, five hundred twenty-five thousand, six hundred seventy".