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87013862 = 21329373119
BaseRepresentation
bin1010010111110…
…11100111100110
320001201202120122
411023323213212
5134233420422
612345001542
72104414505
oct513734746
9201652518
1087013862
1145131891
12251832b2
13150479c0
14b7b083c
15798bd42
hex52fb9e6

87013862 has 32 divisors (see below), whose sum is σ = 149385600. Its totient is φ = 37715328.

The previous prime is 87013859. The next prime is 87013889. The reversal of 87013862 is 26831078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26339 + ... + 29457.

It is an arithmetic number, because the mean of its divisors is an integer number (4668300).

Almost surely, 287013862 is an apocalyptic number.

87013862 is a deficient number, since it is larger than the sum of its proper divisors (62371738).

87013862 is a wasteful number, since it uses less digits than its factorization.

87013862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 87013862 is about 9328.1221046897. The cubic root of 87013862 is about 443.1282947058.

The spelling of 87013862 in words is "eighty-seven million, thirteen thousand, eight hundred sixty-two".

Divisors: 1 2 13 26 29 37 58 74 377 481 754 962 1073 2146 3119 6238 13949 27898 40547 81094 90451 115403 180902 230806 1175863 1500239 2351726 3000478 3346687 6693374 43506931 87013862