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80016880 = 2451000211
BaseRepresentation
bin1001100010011…
…11010111110000
312120120021112011
410301033113300
5130441020010
611535012304
71661063236
oct461172760
9176507464
1080016880
1141192959
122296a094
1313767c88
14a8ac956
157058a8a
hex4c4f5f0

80016880 has 20 divisors (see below), whose sum is σ = 186039432. Its totient is φ = 32006720.

The previous prime is 80016877. The next prime is 80016883. The reversal of 80016880 is 8861008.

It is an interprime number because it is at equal distance from previous prime (80016877) and next prime (80016883).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80016883) 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, 500026 + ... + 500185.

Almost surely, 280016880 is an apocalyptic number.

80016880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80016880 is an abundant number, since it is smaller than the sum of its proper divisors (106022552).

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

80016880 is a wasteful number, since it uses less digits than its factorization.

80016880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000224 (or 1000218 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 80016880 is about 8945.2154809149. The cubic root of 80016880 is about 430.9172415898.

Adding to 80016880 its reverse (8861008), we get a palindrome (88877888).

The spelling of 80016880 in words is "eighty million, sixteen thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1000211 2000422 4000844 5001055 8001688 10002110 16003376 20004220 40008440 80016880