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88648013 = 177696781
BaseRepresentation
bin1010100100010…
…10100101001101
320011210210012202
411102022211031
5140143214023
612444011245
72124332006
oct522124515
9204723182
1088648013
1146048623
1225830b25
131549a75c
14bab81ad
157bb1128
hex548a94d

88648013 has 8 divisors (see below), whose sum is σ = 93998520. Its totient is φ = 83312640.

The previous prime is 88647991. The next prime is 88648057. The reversal of 88648013 is 31084688.

It can be written as a sum of positive squares in 4 ways, for example, as 16957924 + 71690089 = 4118^2 + 8467^2 .

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 88648013 - 220 = 87599437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88648513) 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, 9683 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (11749815).

Almost surely, 288648013 is an apocalyptic number.

It is an amenable number.

88648013 is a deficient number, since it is larger than the sum of its proper divisors (5350507).

88648013 is a wasteful number, since it uses less digits than its factorization.

88648013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 88648013 is about 9415.3073768199. The cubic root of 88648013 is about 445.8851430595.

The spelling of 88648013 in words is "eighty-eight million, six hundred forty-eight thousand, thirteen".

Divisors: 1 17 769 6781 13073 115277 5214589 88648013