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726242 = 21123001
BaseRepresentation
bin10110001010011100010
31100220012212
42301103202
5141214432
623322122
76113216
oct2612342
91326185
10726242
11456700
122b0342
131c573a
1414c946
15e52b2
hexb14e2

726242 has 12 divisors (see below), whose sum is σ = 1197798. Its totient is φ = 330000.

The previous prime is 726221. The next prime is 726287. The reversal of 726242 is 242627.

Adding to 726242 its reverse (242627), we get a palindrome (968869).

It can be written as a sum of positive squares in only one way, i.e., 609961 + 116281 = 781^2 + 341^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726242.

It is an unprimeable number.

726242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1259 + ... + 1742.

2726242 is an apocalyptic number.

726242 is a deficient number, since it is larger than the sum of its proper divisors (471556).

726242 is a wasteful number, since it uses less digits than its factorization.

726242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025 (or 3014 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 726242 is about 852.1983337228. The cubic root of 726242 is about 89.8863586251.

The spelling of 726242 in words is "seven hundred twenty-six thousand, two hundred forty-two".

Divisors: 1 2 11 22 121 242 3001 6002 33011 66022 363121 726242