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61284084 = 2237369959
BaseRepresentation
bin1110100111000…
…1111011110100
311021022112221220
43221301323310
5111142042314
610025310340
71342622541
oct351617364
9137275856
1061284084
1131658704
12186353b0
13c909594
1481d3bc8
1555a83a9
hex3a71ef4

61284084 has 24 divisors (see below), whose sum is σ = 144957120. Its totient is φ = 20147904.

The previous prime is 61284023. The next prime is 61284089. The reversal of 61284084 is 48048216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61284089) 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, 34104 + ... + 35855.

It is an arithmetic number, because the mean of its divisors is an integer number (6039880).

Almost surely, 261284084 is an apocalyptic number.

It is an amenable number.

61284084 is an abundant number, since it is smaller than the sum of its proper divisors (83673036).

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

61284084 is a wasteful number, since it uses less digits than its factorization.

61284084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70039 (or 70037 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 61284084 is about 7828.4151652809. The cubic root of 61284084 is about 394.2598627543.

The spelling of 61284084 in words is "sixty-one million, two hundred eighty-four thousand, eighty-four".

Divisors: 1 2 3 4 6 12 73 146 219 292 438 876 69959 139918 209877 279836 419754 839508 5107007 10214014 15321021 20428028 30642042 61284084