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80508144 = 2431677253
BaseRepresentation
bin1001100110001…
…11010011110000
312121111020102010
410303013103300
5131102230034
611553322520
71665210423
oct463072360
9177436363
1080508144
1141498a62
1222b66440
13138aa772
14a9999ba
1571043e9
hex4cc74f0

80508144 has 20 divisors (see below), whose sum is σ = 207979496. Its totient is φ = 26836032.

The previous prime is 80508143. The next prime is 80508179. The reversal of 80508144 is 44180508.

It is a super-2 number, since 2×805081442 = 12963122500649472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80508143) 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, 838579 + ... + 838674.

Almost surely, 280508144 is an apocalyptic number.

It is an amenable number.

80508144 is an abundant number, since it is smaller than the sum of its proper divisors (127471352).

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

80508144 is a wasteful number, since it uses less digits than its factorization.

80508144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677264 (or 1677258 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 80508144 is about 8972.6330583614. The cubic root of 80508144 is about 431.7973157570.

The spelling of 80508144 in words is "eighty million, five hundred eight thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 48 1677253 3354506 5031759 6709012 10063518 13418024 20127036 26836048 40254072 80508144