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87266913 = 329088971
BaseRepresentation
bin1010011001110…
…01011001100001
320002012121200220
411030321121201
5134320020123
612354233253
72106520326
oct514713141
9202177626
1087266913
1145294a18
1225285829
1315105c36
14b838b4d
1579dbce3
hex5339661

87266913 has 4 divisors (see below), whose sum is σ = 116355888. Its totient is φ = 58177940.

The previous prime is 87266869. The next prime is 87266917. The reversal of 87266913 is 31966278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87266913 - 29 = 87266401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87266917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14544483 + ... + 14544488.

It is an arithmetic number, because the mean of its divisors is an integer number (29088972).

Almost surely, 287266913 is an apocalyptic number.

It is an amenable number.

87266913 is a deficient number, since it is larger than the sum of its proper divisors (29088975).

87266913 is a wasteful number, since it uses less digits than its factorization.

87266913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29088974.

The product of its digits is 108864, while the sum is 42.

The square root of 87266913 is about 9341.6761343990. The cubic root of 87266913 is about 443.5574429251.

The spelling of 87266913 in words is "eighty-seven million, two hundred sixty-six thousand, nine hundred thirteen".

Divisors: 1 3 29088971 87266913