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80408684 = 22191058009
BaseRepresentation
bin1001100101011…
…11000001101100
312121022011222102
410302233001230
5131041034214
611551234232
71664314436
oct462570154
9177264872
1080408684
1141430264
1222b18978
1313874405
14a971656
1570d4bde
hex4caf06c

80408684 has 12 divisors (see below), whose sum is σ = 148121400. Its totient is φ = 38088288.

The previous prime is 80408617. The next prime is 80408687. The reversal of 80408684 is 48680408.

It is a super-2 number, since 2×804086842 = 12931112925223712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (80408687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528929 + ... + 529080.

It is an arithmetic number, because the mean of its divisors is an integer number (12343450).

Almost surely, 280408684 is an apocalyptic number.

It is an amenable number.

80408684 is a deficient number, since it is larger than the sum of its proper divisors (67712716).

80408684 is a wasteful number, since it uses less digits than its factorization.

80408684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058032 (or 1058030 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 80408684 is about 8967.0889367732. The cubic root of 80408684 is about 431.6194279207.

The spelling of 80408684 in words is "eighty million, four hundred eight thousand, six hundred eighty-four".

Divisors: 1 2 4 19 38 76 1058009 2116018 4232036 20102171 40204342 80408684