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61082260 = 2253054113
BaseRepresentation
bin1110100100000…
…0101010010100
311020221022002221
43221000222110
5111114113020
610021112124
71341122251
oct351005224
9136838087
1061082260
1131530008
1218558644
13c868765
148180428
1555686aa
hex3a40a94

61082260 has 12 divisors (see below), whose sum is σ = 128272788. Its totient is φ = 24432896.

The previous prime is 61082257. The next prime is 61082269. The reversal of 61082260 is 6228016.

It can be written as a sum of positive squares in 2 ways, for example, as 41757444 + 19324816 = 6462^2 + 4396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61082269) 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, 1527037 + ... + 1527076.

It is an arithmetic number, because the mean of its divisors is an integer number (10689399).

Almost surely, 261082260 is an apocalyptic number.

It is an amenable number.

61082260 is an abundant number, since it is smaller than the sum of its proper divisors (67190528).

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

61082260 is a wasteful number, since it uses less digits than its factorization.

61082260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054122 (or 3054120 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 61082260 is about 7815.5140585889. The cubic root of 61082260 is about 393.8265876048.

The spelling of 61082260 in words is "sixty-one million, eighty-two thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 3054113 6108226 12216452 15270565 30541130 61082260