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120201408 = 263559131
BaseRepresentation
bin1110010101000…
…10000011000000
322101011212100000
413022202003000
5221232421113
615532200000
72656460265
oct712420300
9271155300
10120201408
116193a108
1234309000
131bb977c2
1411d6d26c
15a845373
hex72a20c0

120201408 has 168 divisors, whose sum is σ = 366125760. Its totient is φ = 39087360.

The previous prime is 120201397. The next prime is 120201409. The reversal of 120201408 is 804102021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (120201409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 917503 + ... + 917633.

It is an arithmetic number, because the mean of its divisors is an integer number (2179320).

Almost surely, 2120201408 is an apocalyptic number.

120201408 is a gapful number since it is divisible by the number (18) 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 120201408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183062880).

120201408 is an abundant number, since it is smaller than the sum of its proper divisors (245924352).

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

120201408 is an equidigital number, since it uses as much as digits as its factorization.

120201408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 120201408 is about 10963.6402713697. The cubic root of 120201408 is about 493.5182133133.

Adding to 120201408 its reverse (804102021), we get a palindrome (924303429).

The spelling of 120201408 in words is "one hundred twenty million, two hundred one thousand, four hundred eight".