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80408121 = 345135939
BaseRepresentation
bin1001100101011…
…10111000111001
312121022011012120
410302232320321
5131041024441
611551231453
71664313003
oct462567071
9177264176
1080408121
114142a8a2
1222b18589
1313874091
14a971373
1570d4966
hex4caee39

80408121 has 8 divisors (see below), whose sum is σ = 107252640. Its totient is φ = 53584512.

The previous prime is 80408099. The next prime is 80408123. The reversal of 80408121 is 12180408.

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

It is not a de Polignac number, because 80408121 - 25 = 80408089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80408091 and 80408100.

It is not an unprimeable number, because it can be changed into a prime (80408123) 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, 10570 + ... + 16508.

It is an arithmetic number, because the mean of its divisors is an integer number (13406580).

Almost surely, 280408121 is an apocalyptic number.

It is an amenable number.

80408121 is a deficient number, since it is larger than the sum of its proper divisors (26844519).

80408121 is a wasteful number, since it uses less digits than its factorization.

80408121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10455.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 80408121 is about 8967.0575441446. The cubic root of 80408121 is about 431.6184205573.

Adding to 80408121 its reverse (12180408), we get a palindrome (92588529).

It can be divided in two parts, 8040 and 8121, that added together give a palindrome (16161).

The spelling of 80408121 in words is "eighty million, four hundred eight thousand, one hundred twenty-one".

Divisors: 1 3 4513 5939 13539 17817 26802707 80408121