Search a number
-
+
80006401 = 85993139
BaseRepresentation
bin1001100010011…
…00110100000001
312120112202011001
410301030310001
5130440201101
611534452001
71661020546
oct461146401
9176482131
1080006401
1141185aa2
1222964001
1313763287
14a8a8bcd
157055901
hex4c4cd01

80006401 has 4 divisors (see below), whose sum is σ = 80100400. Its totient is φ = 79912404.

The previous prime is 80006393. The next prime is 80006411. The reversal of 80006401 is 10460008.

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 80006401 - 23 = 80006393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80006411) 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, 45711 + ... + 47428.

It is an arithmetic number, because the mean of its divisors is an integer number (20025100).

Almost surely, 280006401 is an apocalyptic number.

It is an amenable number.

80006401 is a deficient number, since it is larger than the sum of its proper divisors (93999).

80006401 is an equidigital number, since it uses as much as digits as its factorization.

80006401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93998.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 80006401 is about 8944.6297296199. The cubic root of 80006401 is about 430.8984298136.

Adding to 80006401 its reverse (10460008), we get a palindrome (90466409).

The spelling of 80006401 in words is "eighty million, six thousand, four hundred one".

Divisors: 1 859 93139 80006401