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88278985 = 521298293
BaseRepresentation
bin1010100001100…
…00011111001001
320011010001000001
411100300133021
5140044411420
612432043001
72121234064
oct520603711
9204101001
1088278985
1145916343
1225693461
131539b7b2
14ba1d8db
157b3bb0a
hex54307c9

88278985 has 8 divisors (see below), whose sum is σ = 105997320. Its totient is φ = 70581504.

The previous prime is 88278941. The next prime is 88278989. The reversal of 88278985 is 58987288.

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 88115769 = 404^2 + 9387^2 .

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 88278985 - 29 = 88278473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88278989) 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, 6499 + ... + 14791.

It is an arithmetic number, because the mean of its divisors is an integer number (13249665).

Almost surely, 288278985 is an apocalyptic number.

It is an amenable number.

88278985 is a deficient number, since it is larger than the sum of its proper divisors (17718335).

88278985 is a wasteful number, since it uses less digits than its factorization.

88278985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427.

The product of its digits is 2580480, while the sum is 55.

The square root of 88278985 is about 9395.6897032629. The cubic root of 88278985 is about 445.2655655100.

The spelling of 88278985 in words is "eighty-eight million, two hundred seventy-eight thousand, nine hundred eighty-five".

Divisors: 1 5 2129 8293 10645 41465 17655797 88278985