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88642080 = 2533517271
BaseRepresentation
bin1010100100010…
…01001000100000
320011210111002000
411102021020200
5140143021310
612443524000
72124305502
oct522111040
9204714060
1088642080
114604411a
1225829600
1315497b47
14bab5d72
157bae4c0
hex5489220

88642080 has 288 divisors, whose sum is σ = 334212480. Its totient is φ = 21934080.

The previous prime is 88642079. The next prime is 88642093. The reversal of 88642080 is 8024688.

88642080 is a `hidden beast` number, since 8 + 8 + 642 + 0 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1248445 + ... + 1248515.

It is an arithmetic number, because the mean of its divisors is an integer number (1160460).

Almost surely, 288642080 is an apocalyptic number.

88642080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88642080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167106240).

88642080 is an abundant number, since it is smaller than the sum of its proper divisors (245570400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88642080 is a wasteful number, since it uses less digits than its factorization.

88642080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 88642080 is about 9414.9922995189. The cubic root of 88642080 is about 445.8751954946.

The spelling of 88642080 in words is "eighty-eight million, six hundred forty-two thousand, eighty".