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87349371 = 329116457
BaseRepresentation
bin1010011010011…
…01100001111011
320002100210210220
411031031201323
5134330134441
612400111123
72110312614
oct515154173
9202323726
1087349371
114534096a
12253054a3
1315134625
14b85ac0b
157a06466
hex534d87b

87349371 has 4 divisors (see below), whose sum is σ = 116465832. Its totient is φ = 58232912.

The previous prime is 87349369. The next prime is 87349397. The reversal of 87349371 is 17394378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87349371 - 21 = 87349369 is a prime.

It is a super-2 number, since 2×873493712 = 15259825228191282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87349321) 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, 14558226 + ... + 14558231.

It is an arithmetic number, because the mean of its divisors is an integer number (29116458).

Almost surely, 287349371 is an apocalyptic number.

87349371 is a deficient number, since it is larger than the sum of its proper divisors (29116461).

87349371 is a wasteful number, since it uses less digits than its factorization.

87349371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29116460.

The product of its digits is 127008, while the sum is 42.

The square root of 87349371 is about 9346.0885401327. The cubic root of 87349371 is about 443.6971038979.

The spelling of 87349371 in words is "eighty-seven million, three hundred forty-nine thousand, three hundred seventy-one".

Divisors: 1 3 29116457 87349371