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115031200 = 2552532713
BaseRepresentation
bin1101101101100…
…11110010100000
322000110012010211
412312303302200
5213421444300
615225303504
72564514634
oct666636240
9260405124
10115031200
1159a28709
1232634b94
131aaa73cb
14113c4dc4
15a1734ba
hex6db3ca0

115031200 has 72 divisors (see below), whose sum is σ = 286223868. Its totient is φ = 45127680.

The previous prime is 115031183. The next prime is 115031201. The reversal of 115031200 is 2130511.

It can be written as a sum of positive squares in 6 ways, for example, as 90706576 + 24324624 = 9524^2 + 4932^2 .

It is not an unprimeable number, because it can be changed into a prime (115031201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41044 + ... + 43756.

Almost surely, 2115031200 is an apocalyptic number.

115031200 is a gapful number since it is divisible by the number (10) 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 115031200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143111934).

115031200 is an abundant number, since it is smaller than the sum of its proper divisors (171192668).

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

115031200 is a wasteful number, since it uses less digits than its factorization.

115031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786 (or 2773 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 115031200 is about 10725.2599036107. The cubic root of 115031200 is about 486.3383870624.

Adding to 115031200 its reverse (2130511), we get a palindrome (117161711).

The spelling of 115031200 in words is "one hundred fifteen million, thirty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 53 80 100 106 160 200 212 265 400 424 530 800 848 1060 1325 1696 2120 2650 2713 4240 5300 5426 8480 10600 10852 13565 21200 21704 27130 42400 43408 54260 67825 86816 108520 135650 143789 217040 271300 287578 434080 542600 575156 718945 1085200 1150312 1437890 2170400 2300624 2875780 3594725 4601248 5751560 7189450 11503120 14378900 23006240 28757800 57515600 115031200