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115420168 = 23371492617
BaseRepresentation
bin1101110000100…
…10110000001000
322001011221201001
412320102300020
5214021421133
615241504344
72601024643
oct670226010
9261157631
10115420168
115a173976
12327a20b4
131abb2476
1411486a5a
15a1ed87d
hex6e12c08

115420168 has 32 divisors (see below), whose sum is σ = 223839000. Its totient is φ = 55752192.

The previous prime is 115420159. The next prime is 115420169. The reversal of 115420168 is 861024511.

It can be written as a sum of positive squares in 4 ways, for example, as 114875524 + 544644 = 10718^2 + 738^2 .

It is a super-2 number, since 2×1154201682 = 26643630362296448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115420169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42796 + ... + 45412.

Almost surely, 2115420168 is an apocalyptic number.

It is an amenable number.

115420168 is a deficient number, since it is larger than the sum of its proper divisors (108418832).

115420168 is a wasteful number, since it uses less digits than its factorization.

115420168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809 (or 2805 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 115420168 is about 10743.3778673190. The cubic root of 115420168 is about 486.8859406788.

Adding to 115420168 its reverse (861024511), we get a palindrome (976444679).

The spelling of 115420168 in words is "one hundred fifteen million, four hundred twenty thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 37 74 148 149 296 298 596 1192 2617 5234 5513 10468 11026 20936 22052 44104 96829 193658 387316 389933 774632 779866 1559732 3119464 14427521 28855042 57710084 115420168