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7980071 = 11265951
BaseRepresentation
bin11110011100010000100111
3120000102121012
4132130100213
54020330241
6443012435
7124554341
oct36342047
916012535
107980071
114560600
12280a11b
131865348
1410ba291
15a796eb
hex79c427

7980071 has 6 divisors (see below), whose sum is σ = 8771616. Its totient is φ = 7254500.

The previous prime is 7980067. The next prime is 7980101. The reversal of 7980071 is 1700897.

7980071 = T301 + T302 + ... + T421.

It is not a de Polignac number, because 7980071 - 22 = 7980067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32855 + ... + 33096.

It is an arithmetic number, because the mean of its divisors is an integer number (1461936).

Almost surely, 27980071 is an apocalyptic number.

7980071 is a deficient number, since it is larger than the sum of its proper divisors (791545).

7980071 is a wasteful number, since it uses less digits than its factorization.

7980071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65973 (or 65962 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 7980071 is about 2824.9019452009. The cubic root of 7980071 is about 199.8337869043.

The spelling of 7980071 in words is "seven million, nine hundred eighty thousand, seventy-one".

Divisors: 1 11 121 65951 725461 7980071