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80894020 = 225191931103
BaseRepresentation
bin1001101001001…
…01100001000100
312122012211201211
410310211201010
5131202102040
612005501204
72001405424
oct464454104
9178184654
1080894020
1141731969
1223111804
13139b42ac
14aa5a484
15717d8ea
hex4d25844

80894020 has 48 divisors (see below), whose sum is σ = 179907840. Its totient is φ = 30468096.

The previous prime is 80893997. The next prime is 80894029. The reversal of 80894020 is 2049808.

It is not an unprimeable number, because it can be changed into a prime (80894029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72789 + ... + 73891.

It is an arithmetic number, because the mean of its divisors is an integer number (3748080).

Almost surely, 280894020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80894020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89953920).

80894020 is an abundant number, since it is smaller than the sum of its proper divisors (99013820).

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

80894020 is a wasteful number, since it uses less digits than its factorization.

80894020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 80894020 is about 8994.1102950764. The cubic root of 80894020 is about 432.4860855113.

The spelling of 80894020 in words is "eighty million, eight hundred ninety-four thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 193 380 386 772 965 1103 1930 2206 3667 3860 4412 5515 7334 11030 14668 18335 20957 22060 36670 41914 73340 83828 104785 209570 212879 419140 425758 851516 1064395 2128790 4044701 4257580 8089402 16178804 20223505 40447010 80894020