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80001901 = 714278009
BaseRepresentation
bin1001100010010…
…11101101101101
312120112111222101
410301023231231
5130440030101
611534415101
71661001460
oct461135555
9176474871
1080001901
1141182681
1222961491
1313761205
14a8a72d7
157054401
hex4c4bb6d

80001901 has 8 divisors (see below), whose sum is σ = 91506240. Its totient is φ = 68516448.

The previous prime is 80001893. The next prime is 80001931. The reversal of 80001901 is 10910008.

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

It is not a de Polignac number, because 80001901 - 23 = 80001893 is a prime.

It is a super-2 number, since 2×800019012 = 12800608327227602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80001931) 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, 5985 + ... + 13993.

It is an arithmetic number, because the mean of its divisors is an integer number (11438280).

Almost surely, 280001901 is an apocalyptic number.

It is an amenable number.

80001901 is a deficient number, since it is larger than the sum of its proper divisors (11504339).

80001901 is a wasteful number, since it uses less digits than its factorization.

80001901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9443.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 80001901 is about 8944.3781784985. The cubic root of 80001901 is about 430.8903509630.

Adding to 80001901 its reverse (10910008), we get a palindrome (90911909).

The spelling of 80001901 in words is "eighty million, one thousand, nine hundred one".

Divisors: 1 7 1427 8009 9989 56063 11428843 80001901