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80576080 = 2451377477
BaseRepresentation
bin1001100110101…
…11111001010000
312121121200121021
410303113321100
5131111413310
611555005224
71665612454
oct463277120
9177550537
1080576080
1141535002
1222b99814
1313902670
14a9b6664
1571195da
hex4cd7e50

80576080 has 40 divisors (see below), whose sum is σ = 201752712. Its totient is φ = 29750784.

The previous prime is 80576063. The next prime is 80576101. The reversal of 80576080 is 8067508.

It can be written as a sum of positive squares in 4 ways, for example, as 9072144 + 71503936 = 3012^2 + 8456^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 37699 + ... + 39778.

Almost surely, 280576080 is an apocalyptic number.

80576080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80576080 is an abundant number, since it is smaller than the sum of its proper divisors (121176632).

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

80576080 is a wasteful number, since it uses less digits than its factorization.

80576080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77503 (or 77497 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 80576080 is about 8976.4179938325. The cubic root of 80576080 is about 431.9187375727.

The spelling of 80576080 in words is "eighty million, five hundred seventy-six thousand, eighty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 1040 77477 154954 309908 387385 619816 774770 1007201 1239632 1549540 2014402 3099080 4028804 5036005 6198160 8057608 10072010 16115216 20144020 40288040 80576080