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80532 = 22322237
BaseRepresentation
bin10011101010010100
311002110200
4103222110
510034112
61420500
7453534
oct235224
9132420
1080532
1155561
123a730
132a86a
14214c4
1518cdc
hex13a94

80532 has 18 divisors (see below), whose sum is σ = 203658. Its totient is φ = 26832.

The previous prime is 80527. The next prime is 80537. The reversal of 80532 is 23508.

It is an interprime number because it is at equal distance from previous prime (80527) and next prime (80537).

It can be written as a sum of positive squares in only one way, i.e., 76176 + 4356 = 276^2 + 66^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1083 + ... + 1154.

280532 is an apocalyptic number.

It is an amenable number.

80532 is an abundant number, since it is smaller than the sum of its proper divisors (123126).

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

80532 is a wasteful number, since it uses less digits than its factorization.

80532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 80532 is about 283.7816061693. The cubic root of 80532 is about 43.1839961296.

The spelling of 80532 in words is "eighty thousand, five hundred thirty-two".

Divisors: 1 2 3 4 6 9 12 18 36 2237 4474 6711 8948 13422 20133 26844 40266 80532