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671948 = 22167987
BaseRepresentation
bin10100100000011001100
31021010201222
42210003030
5133000243
622222512
75466014
oct2440314
91233658
10671948
11419932
12284a38
131a6b04
14136c44
15d4168
hexa40cc

671948 has 6 divisors (see below), whose sum is σ = 1175916. Its totient is φ = 335972.

The previous prime is 671947. The next prime is 671969. The reversal of 671948 is 849176.

It is a super-2 number, since 2×6719482 = 903028229408, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671948.

It is not an unprimeable number, because it can be changed into a prime (671941) 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, 83990 + ... + 83997.

It is an arithmetic number, because the mean of its divisors is an integer number (195986).

2671948 is an apocalyptic number.

It is an amenable number.

671948 is a deficient number, since it is larger than the sum of its proper divisors (503968).

671948 is a wasteful number, since it uses less digits than its factorization.

671948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167991 (or 167989 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 671948 is about 819.7243439108. The cubic root of 671948 is about 87.5881234637.

The spelling of 671948 in words is "six hundred seventy-one thousand, nine hundred forty-eight".

Divisors: 1 2 4 167987 335974 671948