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7401401 = 72151049
BaseRepresentation
bin11100001110111110111001
3111221000210222
4130032332321
53343321101
6422345425
7116624300
oct34167671
914830728
107401401
1141a5867
12258b275
1316c1b37
14da9437
159b301b
hex70efb9

7401401 has 6 divisors (see below), whose sum is σ = 8609850. Its totient is φ = 6344016.

The previous prime is 7401379. The next prime is 7401403. The reversal of 7401401 is 1041047.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 765625 = 2576^2 + 875^2 .

It is not a de Polignac number, because 7401401 - 26 = 7401337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7401401.

It is not an unprimeable number, because it can be changed into a prime (7401403) 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, 75476 + ... + 75573.

It is an arithmetic number, because the mean of its divisors is an integer number (1434975).

Almost surely, 27401401 is an apocalyptic number.

It is an amenable number.

7401401 is a deficient number, since it is larger than the sum of its proper divisors (1208449).

7401401 is a wasteful number, since it uses less digits than its factorization.

7401401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151063 (or 151056 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 7401401 is about 2720.5515984815. The cubic root of 7401401 is about 194.8818131079.

Adding to 7401401 its reverse (1041047), we get a palindrome (8442448).

The spelling of 7401401 in words is "seven million, four hundred one thousand, four hundred one".

Divisors: 1 7 49 151049 1057343 7401401