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120020018 = 2108755207
BaseRepresentation
bin1110010011101…
…01110000110010
322100211122111212
413021311300302
5221211120033
615524240122
72655103406
oct711656062
9270748455
10120020018
11618258a8
1234240042
131bb33081
1411d23106
15a80b748
hex7275c32

120020018 has 8 divisors (see below), whose sum is σ = 180198912. Its totient is φ = 59953716.

The previous prime is 120020011. The next prime is 120020027. The reversal of 120020018 is 810020021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 120019984 and 120020011.

It is not an unprimeable number, because it can be changed into a prime (120020011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25430 + ... + 29777.

It is an arithmetic number, because the mean of its divisors is an integer number (22524864).

Almost surely, 2120020018 is an apocalyptic number.

120020018 is a deficient number, since it is larger than the sum of its proper divisors (60178894).

120020018 is a wasteful number, since it uses less digits than its factorization.

120020018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56296.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 120020018 is about 10955.3648045147. The cubic root of 120020018 is about 493.2698403596.

Adding to 120020018 its reverse (810020021), we get a palindrome (930040039).

The spelling of 120020018 in words is "one hundred twenty million, twenty thousand, eighteen".

Divisors: 1 2 1087 2174 55207 110414 60010009 120020018