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53038340 = 22517315329
BaseRepresentation
bin1100101001010…
…0110100000100
310200210121220222
43022110310010
5102034211330
65132443512
71212550505
oct312246404
9120717828
1053038340
1127a36543
1215919598
13acb0344
147088bac
1549ca0e5
hex3294d04

53038340 has 24 divisors (see below), whose sum is σ = 112031640. Its totient is φ = 21091328.

The previous prime is 53038333. The next prime is 53038343. The reversal of 53038340 is 4383035.

It can be written as a sum of positive squares in 4 ways, for example, as 5373124 + 47665216 = 2318^2 + 6904^2 .

It is not an unprimeable number, because it can be changed into a prime (53038343) 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, 4205 + ... + 11124.

It is an arithmetic number, because the mean of its divisors is an integer number (4667985).

Almost surely, 253038340 is an apocalyptic number.

It is an amenable number.

53038340 is an abundant number, since it is smaller than the sum of its proper divisors (58993300).

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

53038340 is a wasteful number, since it uses less digits than its factorization.

53038340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15511 (or 15509 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 53038340 is about 7282.7426152515. The cubic root of 53038340 is about 375.7191296881.

The spelling of 53038340 in words is "fifty-three million, thirty-eight thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 173 346 692 865 1730 3460 15329 30658 61316 76645 153290 306580 2651917 5303834 10607668 13259585 26519170 53038340