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7948961 = 23345607
BaseRepresentation
bin11110010100101010100001
3112221211220222
4132110222201
54013331321
6442212425
7124364546
oct36245241
915854828
107948961
11453a199
1227b4115
131854137
1410acbcd
15a703ab
hex794aa1

7948961 has 4 divisors (see below), whose sum is σ = 8294592. Its totient is φ = 7603332.

The previous prime is 7948951. The next prime is 7948981. The reversal of 7948961 is 1698497.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7948961 - 210 = 7947937 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 (7948931) 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 3 ways as a sum of consecutive naturals, for example, 172781 + ... + 172826.

It is an arithmetic number, because the mean of its divisors is an integer number (2073648).

Almost surely, 27948961 is an apocalyptic number.

It is an amenable number.

7948961 is a deficient number, since it is larger than the sum of its proper divisors (345631).

7948961 is a wasteful number, since it uses less digits than its factorization.

7948961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345630.

The product of its digits is 108864, while the sum is 44.

The square root of 7948961 is about 2819.3901822912. The cubic root of 7948961 is about 199.5737672736.

The spelling of 7948961 in words is "seven million, nine hundred forty-eight thousand, nine hundred sixty-one".

Divisors: 1 23 345607 7948961