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61234472 = 23131813253
BaseRepresentation
bin1110100110010…
…1110100101000
311021020000220102
43221211310220
5111134000342
610024244532
71342325105
oct351456450
9137200812
1061234472
1131624402
1218610748
13c8bcb20
1481bdaac
155598832
hex3a65d28

61234472 has 32 divisors (see below), whose sum is σ = 124367880. Its totient is φ = 28097280.

The previous prime is 61234469. The next prime is 61234501. The reversal of 61234472 is 27443216.

61234472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 43375396 + 17859076 = 6586^2 + 4226^2 .

It is a super-2 number, since 2×612344722 = 7499321122237568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17198 + ... + 20450.

Almost surely, 261234472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61234472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62183940).

61234472 is an abundant number, since it is smaller than the sum of its proper divisors (63133408).

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

61234472 is a wasteful number, since it uses less digits than its factorization.

61234472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3449 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 61234472 is about 7825.2458108356. The cubic root of 61234472 is about 394.1534441454.

Adding to 61234472 its reverse (27443216), we get a palindrome (88677688).

The spelling of 61234472 in words is "sixty-one million, two hundred thirty-four thousand, four hundred seventy-two".

Divisors: 1 2 4 8 13 26 52 104 181 362 724 1448 2353 3253 4706 6506 9412 13012 18824 26024 42289 84578 169156 338312 588793 1177586 2355172 4710344 7654309 15308618 30617236 61234472