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87294080 = 275136397
BaseRepresentation
bin1010011010000…
…00000010000000
320002020222222002
411031000002000
5134321402310
612355003132
72106662456
oct515000200
9202228862
1087294080
1145303375
12252994a8
1315115403
14b8449d6
1579e4da5
hex5340080

87294080 has 32 divisors (see below), whose sum is σ = 208688940. Its totient is φ = 34917376.

The previous prime is 87294079. The next prime is 87294139. The reversal of 87294080 is 8049278.

It can be written as a sum of positive squares in 2 ways, for example, as 79852096 + 7441984 = 8936^2 + 2728^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67559 + ... + 68838.

Almost surely, 287294080 is an apocalyptic number.

87294080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87294080 is an abundant number, since it is smaller than the sum of its proper divisors (121394860).

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

87294080 is a wasteful number, since it uses less digits than its factorization.

87294080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136416 (or 136404 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 87294080 is about 9343.1300964934. The cubic root of 87294080 is about 443.6034659993.

The spelling of 87294080 in words is "eighty-seven million, two hundred ninety-four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 136397 272794 545588 681985 1091176 1363970 2182352 2727940 4364704 5455880 8729408 10911760 17458816 21823520 43647040 87294080