Search a number
-
+
7994497 = 721931277
BaseRepresentation
bin11110011111110010000001
3120001011101111
4132133302001
54021310442
6443203321
7124644400
oct36376201
916034344
107994497
114570425
122816541
13186ba94
1410c1637
15a7db17
hex79fc81

7994497 has 24 divisors (see below), whose sum is σ = 10141440. Its totient is φ = 6259680.

The previous prime is 7994491. The next prime is 7994513. The reversal of 7994497 is 7944997.

It is not a de Polignac number, because 7994497 - 23 = 7994489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

7994497 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7994497.

It is not an unprimeable number, because it can be changed into a prime (7994491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28723 + ... + 28999.

It is an arithmetic number, because the mean of its divisors is an integer number (422560).

Almost surely, 27994497 is an apocalyptic number.

It is an amenable number.

7994497 is a deficient number, since it is larger than the sum of its proper divisors (2146943).

7994497 is a wasteful number, since it uses less digits than its factorization.

7994497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 334 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 7994497 is about 2827.4541552428. The cubic root of 7994497 is about 199.9541311477.

The spelling of 7994497 in words is "seven million, nine hundred ninety-four thousand, four hundred ninety-seven".

Divisors: 1 7 19 31 49 133 217 277 589 931 1519 1939 4123 5263 8587 13573 28861 36841 60109 163153 257887 420763 1142071 7994497