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120145894 = 211311131559
BaseRepresentation
bin1110010100101…
…00011111100110
322101002001011221
413022110133212
5221224132034
615531050554
72656136401
oct712243746
9271061157
10120145894
1161901430
12342a0a5a
131bb7845b
1411d56d38
15a833bb4
hex72947e6

120145894 has 32 divisors (see below), whose sum is σ = 204871680. Its totient is φ = 52348800.

The previous prime is 120145871. The next prime is 120145957. The reversal of 120145894 is 498541021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76287 + ... + 77845.

It is an arithmetic number, because the mean of its divisors is an integer number (6402240).

Almost surely, 2120145894 is an apocalyptic number.

120145894 is a deficient number, since it is larger than the sum of its proper divisors (84725786).

120145894 is a wasteful number, since it uses less digits than its factorization.

120145894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 120145894 is about 10961.1082468882. The cubic root of 120145894 is about 493.4422258814.

The spelling of 120145894 in words is "one hundred twenty million, one hundred forty-five thousand, eight hundred ninety-four".

Divisors: 1 2 11 22 31 62 113 226 341 682 1243 1559 2486 3118 3503 7006 17149 34298 38533 48329 77066 96658 176167 352334 531619 1063238 1937837 3875674 5461177 10922354 60072947 120145894