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87014731 = 611426471
BaseRepresentation
bin1010010111110…
…11110101001011
320001201210202211
411023323311023
5134233432411
612345005551
72104420156
oct513736513
9201653684
1087014731
1145132501
12251838b7
131504820b
14b7b0c9d
15798c221
hex52fbd4b

87014731 has 4 divisors (see below), whose sum is σ = 88441264. Its totient is φ = 85588200.

The previous prime is 87014717. The next prime is 87014743. The reversal of 87014731 is 13741078.

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 87014731 - 225 = 53460299 is a prime.

It is a super-2 number, since 2×870147312 = 15143126822004722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87014693 and 87014702.

It is not an unprimeable number, because it can be changed into a prime (87014771) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 713175 + ... + 713296.

It is an arithmetic number, because the mean of its divisors is an integer number (22110316).

Almost surely, 287014731 is an apocalyptic number.

87014731 is a deficient number, since it is larger than the sum of its proper divisors (1426533).

87014731 is a wasteful number, since it uses less digits than its factorization.

87014731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426532.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 87014731 is about 9328.1686841523. The cubic root of 87014731 is about 443.1297698624.

The spelling of 87014731 in words is "eighty-seven million, fourteen thousand, seven hundred thirty-one".

Divisors: 1 61 1426471 87014731