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80023881 = 373810661
BaseRepresentation
bin1001100010100…
…01000101001001
312120120122010110
410301101011021
5130441231011
611535104533
71661122530
oct461210511
9176518113
1080023881
1141198143
1222972149
131376b212
14a8b1317
15705aba6
hex4c51149

80023881 has 8 divisors (see below), whose sum is σ = 121941184. Its totient is φ = 45727920.

The previous prime is 80023849. The next prime is 80023897. The reversal of 80023881 is 18832008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80023881 - 25 = 80023849 is a prime.

It is a super-2 number, since 2×800238812 = 12807643060604322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80023381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905310 + ... + 1905351.

It is an arithmetic number, because the mean of its divisors is an integer number (15242648).

Almost surely, 280023881 is an apocalyptic number.

It is an amenable number.

80023881 is a deficient number, since it is larger than the sum of its proper divisors (41917303).

80023881 is a wasteful number, since it uses less digits than its factorization.

80023881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810671.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 80023881 is about 8945.6067988706. The cubic root of 80023881 is about 430.9298087865.

Adding to 80023881 its reverse (18832008), we get a palindrome (98855889).

The spelling of 80023881 in words is "eighty million, twenty-three thousand, eight hundred eighty-one".

Divisors: 1 3 7 21 3810661 11431983 26674627 80023881