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87140348 = 2228177527
BaseRepresentation
bin1010011000110…
…10011111111100
320001222012002022
411030122133330
5134301442343
612351415312
72105452331
oct514323774
9201865068
1087140348
1145208919
1225224538
1315090449
14b804988
1579b4568
hex531a7fc

87140348 has 12 divisors (see below), whose sum is σ = 153040272. Its totient is φ = 43414560.

The previous prime is 87140341. The next prime is 87140363. The reversal of 87140348 is 84304178.

It is a happy number.

It is a super-2 number, since 2×871403482 = 15186880499122208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87140341) 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, 37640 + ... + 39887.

It is an arithmetic number, because the mean of its divisors is an integer number (12753356).

Almost surely, 287140348 is an apocalyptic number.

It is an amenable number.

87140348 is a deficient number, since it is larger than the sum of its proper divisors (65899924).

87140348 is a wasteful number, since it uses less digits than its factorization.

87140348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77812 (or 77810 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 87140348 is about 9334.8994638400. The cubic root of 87140348 is about 443.3429056796.

The spelling of 87140348 in words is "eighty-seven million, one hundred forty thousand, three hundred forty-eight".

Divisors: 1 2 4 281 562 1124 77527 155054 310108 21785087 43570174 87140348