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80801481 = 326933827
BaseRepresentation
bin1001101000011…
…10111011001001
312122001010210110
410310032323021
5131141121411
612003504533
72000541555
oct464167311
9178033713
1080801481
1141679392
1223088149
1313981137
14aa34865
1571612a6
hex4d0eec9

80801481 has 4 divisors (see below), whose sum is σ = 107735312. Its totient is φ = 53867652.

The previous prime is 80801473. The next prime is 80801491. The reversal of 80801481 is 18410808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80801481 - 23 = 80801473 is a prime.

It is a super-2 number, since 2×808014812 = 13057758663586722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80801431) 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, 13466911 + ... + 13466916.

It is an arithmetic number, because the mean of its divisors is an integer number (26933828).

Almost surely, 280801481 is an apocalyptic number.

It is an amenable number.

80801481 is a deficient number, since it is larger than the sum of its proper divisors (26933831).

80801481 is a wasteful number, since it uses less digits than its factorization.

80801481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26933830.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 80801481 is about 8988.9644008640. The cubic root of 80801481 is about 432.3211079246.

The spelling of 80801481 in words is "eighty million, eight hundred one thousand, four hundred eighty-one".

Divisors: 1 3 26933827 80801481