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80712000 = 2632531959
BaseRepresentation
bin1001100111110…
…01000101000000
312121212121001100
410303321011000
5131130241000
612001534400
72000016645
oct463710500
9177777040
1080712000
1141618136
1223044400
131394c4a5
14aa0ddcc
157144a00
hex4cf9140

80712000 has 336 divisors, whose sum is σ = 309067200. Its totient is φ = 20044800.

The previous prime is 80711999. The next prime is 80712011. The reversal of 80712000 is 21708.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1367971 + ... + 1368029.

Almost surely, 280712000 is an apocalyptic number.

80712000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80712000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154533600).

80712000 is an abundant number, since it is smaller than the sum of its proper divisors (228355200).

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

80712000 is a wasteful number, since it uses less digits than its factorization.

80712000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 80712000 is about 8983.9857524375. The cubic root of 80712000 is about 432.1614622788.

Adding to 80712000 its reverse (21708), we get a palindrome (80733708).

The spelling of 80712000 in words is "eighty million, seven hundred twelve thousand".