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80902988 = 22192179313
BaseRepresentation
bin1001101001001…
…11101101001100
312122020022000222
410310213231030
5131202343423
612010010512
72001443525
oct464475514
9178208028
1080902988
1141738681
1223116a38
13139b83ba
14aa5d84c
1571813c8
hex4d27b4c

80902988 has 36 divisors (see below), whose sum is σ = 150738840. Its totient is φ = 37986624.

The previous prime is 80902981. The next prime is 80903003. The reversal of 80902988 is 88920908.

It is not an unprimeable number, because it can be changed into a prime (80902981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258320 + ... + 258632.

It is an arithmetic number, because the mean of its divisors is an integer number (4187190).

Almost surely, 280902988 is an apocalyptic number.

It is an amenable number.

80902988 is a deficient number, since it is larger than the sum of its proper divisors (69835852).

80902988 is a wasteful number, since it uses less digits than its factorization.

80902988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 80902988 is about 8994.6088297380. The cubic root of 80902988 is about 432.5020668818.

The spelling of 80902988 in words is "eighty million, nine hundred two thousand, nine hundred eighty-eight".

Divisors: 1 2 4 19 38 76 179 313 358 361 626 716 722 1252 1444 3401 5947 6802 11894 13604 23788 56027 64619 112054 112993 129238 224108 225986 258476 451972 1064513 2129026 4258052 20225747 40451494 80902988