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54389380 = 2257337253
BaseRepresentation
bin1100111101111…
…0101010000100
310210100021012111
43033132222010
5102410430010
65221430404
71230205423
oct317365204
9123307174
1054389380
1128779601
121626b404
13b364286
14731b2ba
154b9558a
hex33dea84

54389380 has 24 divisors (see below), whose sum is σ = 115785432. Its totient is φ = 21457152.

The previous prime is 54389359. The next prime is 54389389. The reversal of 54389380 is 8398345.

It can be written as a sum of positive squares in 4 ways, for example, as 24621444 + 29767936 = 4962^2 + 5456^2 .

It is not an unprimeable number, because it can be changed into a prime (54389389) 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, 17167 + ... + 20086.

It is an arithmetic number, because the mean of its divisors is an integer number (4824393).

Almost surely, 254389380 is an apocalyptic number.

It is an amenable number.

54389380 is an abundant number, since it is smaller than the sum of its proper divisors (61396052).

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

54389380 is a wasteful number, since it uses less digits than its factorization.

54389380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37335 (or 37333 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 54389380 is about 7374.9155927373. The cubic root of 54389380 is about 378.8826364347.

The spelling of 54389380 in words is "fifty-four million, three hundred eighty-nine thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 37253 74506 149012 186265 372530 745060 2719469 5438938 10877876 13597345 27194690 54389380