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80412180 = 22351970537
BaseRepresentation
bin1001100101011…
…11111000010100
312121022100202220
410302233320110
5131041142210
611551302340
71664330562
oct462577024
9177270686
1080412180
1141432952
1222b1a9b0
1313875b94
14a972a32
1570d5c70
hex4cafe14

80412180 has 48 divisors (see below), whose sum is σ = 237007680. Its totient is φ = 20314368.

The previous prime is 80412179. The next prime is 80412191. The reversal of 80412180 is 8121408.

It is a super-2 number, since 2×804121802 = 12932237384704800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80412180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34129 + ... + 36408.

It is an arithmetic number, because the mean of its divisors is an integer number (4937660).

Almost surely, 280412180 is an apocalyptic number.

It is an amenable number.

80412180 is an abundant number, since it is smaller than the sum of its proper divisors (156595500).

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

80412180 is a wasteful number, since it uses less digits than its factorization.

80412180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70568 (or 70566 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 80412180 is about 8967.2838697122. The cubic root of 80412180 is about 431.6256831309.

Adding to 80412180 its reverse (8121408), we get a palindrome (88533588).

The spelling of 80412180 in words is "eighty million, four hundred twelve thousand, one hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 70537 141074 211611 282148 352685 423222 705370 846444 1058055 1340203 1410740 2116110 2680406 4020609 4232220 5360812 6701015 8041218 13402030 16082436 20103045 26804060 40206090 80412180