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80102001 = 373814381
BaseRepresentation
bin1001100011001…
…00001001110001
312120201121021210
410301210021301
5131001231001
611540510333
71661566350
oct461441161
9176647253
1080102001
1141240901
12229ab3a9
1313797945
14a8d1997
157073dd6
hex4c64271

80102001 has 8 divisors (see below), whose sum is σ = 122060224. Its totient is φ = 45772560.

The previous prime is 80101981. The next prime is 80102023. The reversal of 80102001 is 10020108.

It is a happy number.

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

It is not a de Polignac number, because 80102001 - 26 = 80101937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80102041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1907170 + ... + 1907211.

It is an arithmetic number, because the mean of its divisors is an integer number (15257528).

Almost surely, 280102001 is an apocalyptic number.

It is an amenable number.

80102001 is a deficient number, since it is larger than the sum of its proper divisors (41958223).

80102001 is a wasteful number, since it uses less digits than its factorization.

80102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814391.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 80102001 is about 8949.9721228616. The cubic root of 80102001 is about 431.0699889750.

Adding to 80102001 its reverse (10020108), we get a palindrome (90122109).

It can be divided in two parts, 8010 and 2001, that added together give a triangular number (10011 = T141).

The spelling of 80102001 in words is "eighty million, one hundred two thousand, one".

Divisors: 1 3 7 21 3814381 11443143 26700667 80102001