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7976 = 23997
BaseRepresentation
bin1111100101000
3101221102
41330220
5223401
6100532
732153
oct17450
911842
107976
115aa1
124748
133827
142c9a
15256b
hex1f28

7976 has 8 divisors (see below), whose sum is σ = 14970. Its totient is φ = 3984.

The previous prime is 7963. The next prime is 7993. The reversal of 7976 is 6797.

It can be written as a sum of positive squares in only one way, i.e., 5476 + 2500 = 74^2 + 50^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 7976.

It is an unprimeable number.

7976 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491 + ... + 506.

27976 is an apocalyptic number.

It is an amenable number.

7976 is a deficient number, since it is larger than the sum of its proper divisors (6994).

7976 is a wasteful number, since it uses less digits than its factorization.

7976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 999 counting only the distinct ones).

The product of its digits is 2646, while the sum is 29.

The square root of 7976 is about 89.3084542471. The cubic root of 7976 is about 19.9799799666.

The spelling of 7976 in words is "seven thousand, nine hundred seventy-six".

Divisors: 1 2 4 8 997 1994 3988 7976