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80027988 = 22331435003
BaseRepresentation
bin1001100010100…
…10000101010100
312120120211202120
410301102011110
5130441343423
611535135540
71661140515
oct461220524
9176524676
1080027988
11411a0237
12229745b0
1313770051
14a8b2a0c
15705bee3
hex4c52154

80027988 has 48 divisors (see below), whose sum is σ = 197277696. Its totient is φ = 25210080.

The previous prime is 80027977. The next prime is 80027989. The reversal of 80027988 is 88972008.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80027989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13495 + ... + 18497.

It is an arithmetic number, because the mean of its divisors is an integer number (4109952).

Almost surely, 280027988 is an apocalyptic number.

It is an amenable number.

80027988 is an abundant number, since it is smaller than the sum of its proper divisors (117249708).

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

80027988 is a wasteful number, since it uses less digits than its factorization.

80027988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084 (or 5082 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 80027988 is about 8945.8363499452. The cubic root of 80027988 is about 430.9371807461.

The spelling of 80027988 in words is "eighty million, twenty-seven thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 31 43 62 86 93 124 129 172 186 258 372 516 1333 2666 3999 5003 5332 7998 10006 15009 15996 20012 30018 60036 155093 215129 310186 430258 465279 620372 645387 860516 930558 1290774 1861116 2581548 6668999 13337998 20006997 26675996 40013994 80027988