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86132880 = 243251731227
BaseRepresentation
bin1010010001001…
…00100010010000
320000002000002200
411020210202100
5134022223010
612314043200
72064055161
oct510444220
9200060080
1086132880
114468a9a9
1224a19500
1314ac9a02
14b621768
157865cc0
hex5224890

86132880 has 240 divisors, whose sum is σ = 317551104. Its totient is φ = 20828160.

The previous prime is 86132857. The next prime is 86132881. The reversal of 86132880 is 8823168.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (86132881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379327 + ... + 379553.

Almost surely, 286132880 is an apocalyptic number.

86132880 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 86132880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158775552).

86132880 is an abundant number, since it is smaller than the sum of its proper divisors (231418224).

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

86132880 is a wasteful number, since it uses less digits than its factorization.

86132880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 86132880 is about 9280.7801396219. The cubic root of 86132880 is about 441.6277176207.

The spelling of 86132880 in words is "eighty-six million, one hundred thirty-two thousand, eight hundred eighty".