Search a number
-
+
80808049 = 711544007
BaseRepresentation
bin1001101000100…
…00100001110001
312122001110210201
410310100201301
5131141324144
612003555201
72000566660
oct464204161
9178043721
1080808049
1141683313
122308bb01
131398411a
14aa36dd7
1571631d4
hex4d10871

80808049 has 4 divisors (see below), whose sum is σ = 92352064. Its totient is φ = 69264036.

The previous prime is 80808043. The next prime is 80808059. The reversal of 80808049 is 94080808.

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 a cyclic number.

It is not a de Polignac number, because 80808049 - 25 = 80808017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80807999 and 80808017.

It is not an unprimeable number, because it can be changed into a prime (80808043) 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, 5771997 + ... + 5772010.

It is an arithmetic number, because the mean of its divisors is an integer number (23088016).

Almost surely, 280808049 is an apocalyptic number.

It is an amenable number.

80808049 is a deficient number, since it is larger than the sum of its proper divisors (11544015).

80808049 is a wasteful number, since it uses less digits than its factorization.

80808049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11544014.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 80808049 is about 8989.3297302969. The cubic root of 80808049 is about 432.3328214397.

It can be divided in two parts, 8080 and 8049, that added together give a square (16129 = 1272).

The spelling of 80808049 in words is "eighty million, eight hundred eight thousand, forty-nine".

Divisors: 1 7 11544007 80808049