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80318428 = 2232036269
BaseRepresentation
bin1001100100110…
…00111111011100
312121010121011121
410302120333130
5131030142203
611545300324
71663460341
oct462307734
9177117147
1080318428
1141379473
1222a946a4
13138422c8
14a94a7c8
1570b80bd
hex4c98fdc

80318428 has 12 divisors (see below), whose sum is σ = 140623560. Its totient is φ = 40140272.

The previous prime is 80318423. The next prime is 80318437. The reversal of 80318428 is 82481308.

It is a junction number, because it is equal to n+sod(n) for n = 80318393 and 80318402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80318423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9678 + ... + 15946.

It is an arithmetic number, because the mean of its divisors is an integer number (11718630).

Almost surely, 280318428 is an apocalyptic number.

It is an amenable number.

80318428 is a deficient number, since it is larger than the sum of its proper divisors (60305132).

80318428 is a wasteful number, since it uses less digits than its factorization.

80318428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9476 (or 9474 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 80318428 is about 8962.0548982920. The cubic root of 80318428 is about 431.4578747736.

The spelling of 80318428 in words is "eighty million, three hundred eighteen thousand, four hundred twenty-eight".

Divisors: 1 2 4 3203 6269 6406 12538 12812 25076 20079607 40159214 80318428