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80429580 = 223257211829
BaseRepresentation
bin1001100101101…
…00001000001100
312121100020122100
410302310020030
5131042221310
611551515100
71664432400
oct462641014
9177306570
1080429580
1141444a30
1222b28a90
1313880a8a
14a979100
1570daec0
hex4cb420c

80429580 has 216 divisors, whose sum is σ = 309975120. Its totient is φ = 16692480.

The previous prime is 80429563. The next prime is 80429623. The reversal of 80429580 is 8592408.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 96606 + ... + 97434.

It is an arithmetic number, because the mean of its divisors is an integer number (1435070).

Almost surely, 280429580 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 80429580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154987560).

80429580 is an abundant number, since it is smaller than the sum of its proper divisors (229545540).

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

80429580 is a wasteful number, since it uses less digits than its factorization.

80429580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 80429580 is about 8968.2540106757. The cubic root of 80429580 is about 431.6568133454.

The spelling of 80429580 in words is "eighty million, four hundred twenty-nine thousand, five hundred eighty".