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87069735 = 345214987
BaseRepresentation
bin1010011000010…
…01010000100111
320001211121020000
411030021100213
5134242212420
612350112343
72105036424
oct514112047
9201747200
1087069735
114516a865
12251ab6b3
131506726c
14b7c6d4b
15799d690
hex5309427

87069735 has 20 divisors (see below), whose sum is σ = 156081288. Its totient is φ = 46436976.

The previous prime is 87069721. The next prime is 87069751. The reversal of 87069735 is 53796078.

It is a happy number.

It is not a de Polignac number, because 87069735 - 219 = 86545447 is a prime.

It is a super-2 number, since 2×870697352 = 15162277505940450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107089 + ... + 107898.

Almost surely, 287069735 is an apocalyptic number.

87069735 is a deficient number, since it is larger than the sum of its proper divisors (69011553).

87069735 is a wasteful number, since it uses less digits than its factorization.

87069735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215004 (or 214995 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 87069735 is about 9331.1164926819. The cubic root of 87069735 is about 443.2231210134.

The spelling of 87069735 in words is "eighty-seven million, sixty-nine thousand, seven hundred thirty-five".

Divisors: 1 3 5 9 15 27 45 81 135 405 214987 644961 1074935 1934883 3224805 5804649 9674415 17413947 29023245 87069735