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80875680 = 2535168491
BaseRepresentation
bin1001101001000…
…01000010100000
312122011220120120
410310201002200
5131201010210
612005240240
72001301104
oct464410240
9178156516
1080875680
114171a106
1223103080
13139a8b42
14aa53904
157178270
hex4d210a0

80875680 has 48 divisors (see below), whose sum is σ = 254759904. Its totient is φ = 21566720.

The previous prime is 80875651. The next prime is 80875699. The reversal of 80875680 is 8657808.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83766 + ... + 84725.

It is an arithmetic number, because the mean of its divisors is an integer number (5307498).

Almost surely, 280875680 is an apocalyptic number.

80875680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80875680 is an abundant number, since it is smaller than the sum of its proper divisors (173884224).

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

80875680 is a wasteful number, since it uses less digits than its factorization.

80875680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168509 (or 168501 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 80875680 is about 8993.0906811841. The cubic root of 80875680 is about 432.4533991467.

The spelling of 80875680 in words is "eighty million, eight hundred seventy-five thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 168491 336982 505473 673964 842455 1010946 1347928 1684910 2021892 2527365 2695856 3369820 4043784 5054730 5391712 6739640 8087568 10109460 13479280 16175136 20218920 26958560 40437840 80875680