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7948 = 221987
BaseRepresentation
bin1111100001100
3101220101
41330030
5223243
6100444
732113
oct17414
911811
107948
115a76
124724
133805
142c7a
15254d
hex1f0c

7948 has 6 divisors (see below), whose sum is σ = 13916. Its totient is φ = 3972.

The previous prime is 7937. The next prime is 7949. The reversal of 7948 is 8497.

7948 is nontrivially palindromic in base 9.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (7949) by changing a digit.

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, 990 + ... + 997.

27948 is an apocalyptic number.

It is an amenable number.

7948 is a deficient number, since it is larger than the sum of its proper divisors (5968).

7948 is a wasteful number, since it uses less digits than its factorization.

7948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1989 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 7948 is about 89.1515563521. The cubic root of 7948 is about 19.9565724373.

The spelling of 7948 in words is "seven thousand, nine hundred forty-eight".

Divisors: 1 2 4 1987 3974 7948