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53180868 = 22313340903
BaseRepresentation
bin1100101011011…
…1100111000100
310201001212102210
43022313213010
5102103241433
65135503420
71214013156
oct312674704
9121055383
1053180868
1128023634
1215987b70
13b030190
1470c4ad6
154a07463
hex32b79c4

53180868 has 24 divisors (see below), whose sum is σ = 133634368. Its totient is φ = 16363296.

The previous prime is 53180863. The next prime is 53180893. The reversal of 53180868 is 86808135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (53180861) 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, 170296 + ... + 170607.

Almost surely, 253180868 is an apocalyptic number.

It is an amenable number.

53180868 is an abundant number, since it is smaller than the sum of its proper divisors (80453500).

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

53180868 is a wasteful number, since it uses less digits than its factorization.

53180868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340923 (or 340921 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 53180868 is about 7292.5213746687. The cubic root of 53180868 is about 376.0553807818.

The spelling of 53180868 in words is "fifty-three million, one hundred eighty thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 340903 681806 1022709 1363612 2045418 4090836 4431739 8863478 13295217 17726956 26590434 53180868