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115130420 = 2255756521
BaseRepresentation
bin1101101110011…
…00000000110100
322000122020020122
412313030000310
5213433133140
615231351112
72565410126
oct667140064
9260566218
10115130420
1159a96209
1232682498
131ab10612
141140d216
15a192ab5
hex6dcc034

115130420 has 12 divisors (see below), whose sum is σ = 241773924. Its totient is φ = 46052160.

The previous prime is 115130399. The next prime is 115130423. The reversal of 115130420 is 24031511.

It can be written as a sum of positive squares in 2 ways, for example, as 14047504 + 101082916 = 3748^2 + 10054^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115130423) 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, 2878241 + ... + 2878280.

It is an arithmetic number, because the mean of its divisors is an integer number (20147827).

Almost surely, 2115130420 is an apocalyptic number.

115130420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115130420 is an abundant number, since it is smaller than the sum of its proper divisors (126643504).

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

115130420 is a wasteful number, since it uses less digits than its factorization.

115130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756530 (or 5756528 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 115130420 is about 10729.8844355380. The cubic root of 115130420 is about 486.4781770425.

Adding to 115130420 its reverse (24031511), we get a palindrome (139161931).

The spelling of 115130420 in words is "one hundred fifteen million, one hundred thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 5756521 11513042 23026084 28782605 57565210 115130420