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BaseRepresentation
bin1010011110111…
…10000001011101
320010110212122222
411033132001131
5140003104323
612420515125
72115326243
oct517360135
9203425588
1087941213
1145705598
122554baa5
13152b0b29
14b972793
157ac19c8
hex53de05d

87941213 has 8 divisors (see below), whose sum is σ = 92204736. Its totient is φ = 83714400.

The previous prime is 87941209. The next prime is 87941219. The reversal of 87941213 is 31214978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87941213 - 22 = 87941209 is a prime.

It is a super-2 number, since 2×879412132 = 15467313887822738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87941219) 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, 4208 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (11525592).

Almost surely, 287941213 is an apocalyptic number.

It is an amenable number.

87941213 is a deficient number, since it is larger than the sum of its proper divisors (4263523).

87941213 is a wasteful number, since it uses less digits than its factorization.

87941213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18355.

The product of its digits is 12096, while the sum is 35.

The square root of 87941213 is about 9377.6976385465. The cubic root of 87941213 is about 444.6969497490.

The spelling of 87941213 in words is "eighty-seven million, nine hundred forty-one thousand, two hundred thirteen".

Divisors: 1 23 211 4853 18121 416783 3823531 87941213