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54868420 = 22510925169
BaseRepresentation
bin1101000101001…
…1100111000100
310211020121022201
43101103213010
5103021242140
65240004244
71234242145
oct321234704
9124217281
1054868420
1128a76502
1216460684
13b4a1329
147403acc
154c3c49a
hex34539c4

54868420 has 24 divisors (see below), whose sum is σ = 116285400. Its totient is φ = 21745152.

The previous prime is 54868403. The next prime is 54868421. The reversal of 54868420 is 2486845.

It can be written as a sum of positive squares in 4 ways, for example, as 4401604 + 50466816 = 2098^2 + 7104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 54868420.

It is not an unprimeable number, because it can be changed into a prime (54868421) 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, 10405 + ... + 14764.

It is an arithmetic number, because the mean of its divisors is an integer number (4845225).

Almost surely, 254868420 is an apocalyptic number.

It is an amenable number.

54868420 is an abundant number, since it is smaller than the sum of its proper divisors (61416980).

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

54868420 is a wasteful number, since it uses less digits than its factorization.

54868420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25287 (or 25285 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 54868420 is about 7407.3220532119. The cubic root of 54868420 is about 379.9917357390.

The spelling of 54868420 in words is "fifty-four million, eight hundred sixty-eight thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 25169 50338 100676 125845 251690 503380 2743421 5486842 10973684 13717105 27434210 54868420