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120023020 = 22513461627
BaseRepresentation
bin1110010011101…
…10011111101100
322100211210122001
413021312133230
5221211214040
615524302044
72655115225
oct711663754
9270753561
10120023020
1161828087
1234241924
131bb34550
1411d2424c
15a80c59a
hex72767ec

120023020 has 24 divisors (see below), whose sum is σ = 271437264. Its totient is φ = 44316096.

The previous prime is 120023017. The next prime is 120023021. The reversal of 120023020 is 20320021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 120022988 and 120023006.

It is not an unprimeable number, because it can be changed into a prime (120023021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230554 + ... + 231073.

It is an arithmetic number, because the mean of its divisors is an integer number (11309886).

Almost surely, 2120023020 is an apocalyptic number.

120023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120023020 is an abundant number, since it is smaller than the sum of its proper divisors (151414244).

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

120023020 is a wasteful number, since it uses less digits than its factorization.

120023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461649 (or 461647 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 120023020 is about 10955.5018141571. The cubic root of 120023020 is about 493.2739529617.

Adding to 120023020 its reverse (20320021), we get a palindrome (140343041).

The spelling of 120023020 in words is "one hundred twenty million, twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 461627 923254 1846508 2308135 4616270 6001151 9232540 12002302 24004604 30005755 60011510 120023020