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54239620 = 2252711981
BaseRepresentation
bin1100111011101…
…0000110000100
310210001122202211
43032322012010
5102341131440
65214313204
71226013001
oct316720604
9123048684
1054239620
1128687036
12161b8804
13b311066
1472bc8a8
154b65eea
hex33ba184

54239620 has 12 divisors (see below), whose sum is σ = 113903244. Its totient is φ = 21695840.

The previous prime is 54239611. The next prime is 54239629. The reversal of 54239620 is 2693245.

It is an interprime number because it is at equal distance from previous prime (54239611) and next prime (54239629).

It can be written as a sum of positive squares in 2 ways, for example, as 37527876 + 16711744 = 6126^2 + 4088^2 .

It is not an unprimeable number, because it can be changed into a prime (54239629) 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, 1355971 + ... + 1356010.

It is an arithmetic number, because the mean of its divisors is an integer number (9491937).

Almost surely, 254239620 is an apocalyptic number.

It is an amenable number.

54239620 is an abundant number, since it is smaller than the sum of its proper divisors (59663624).

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

54239620 is a wasteful number, since it uses less digits than its factorization.

54239620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711990 (or 2711988 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 54239620 is about 7364.7552573049. The cubic root of 54239620 is about 378.5345683483.

The spelling of 54239620 in words is "fifty-four million, two hundred thirty-nine thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 2711981 5423962 10847924 13559905 27119810 54239620