Search a number
-
+
8041213 = 53173877
BaseRepresentation
bin11110101011001011111101
3120010112110201
4132223023331
54024304323
6444203501
7125230525
oct36531375
916115421
108041213
1145a2534
122839591
13188711b
1410d4685
15a8c8ad
hex7ab2fd

8041213 has 8 divisors (see below), whose sum is σ = 8249688. Its totient is φ = 7834944.

The previous prime is 8041181. The next prime is 8041219. The reversal of 8041213 is 3121408.

It can be written as a sum of positive squares in 4 ways, for example, as 5212089 + 2829124 = 2283^2 + 1682^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8041213 - 25 = 8041181 is a prime.

It is a super-2 number, since 2×80412132 = 129322213022738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8041219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8731 + ... + 9607.

It is an arithmetic number, because the mean of its divisors is an integer number (1031211).

Almost surely, 28041213 is an apocalyptic number.

It is an amenable number.

8041213 is a deficient number, since it is larger than the sum of its proper divisors (208475).

8041213 is a wasteful number, since it uses less digits than its factorization.

8041213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 8041213 is about 2835.7032637425. The cubic root of 8041213 is about 200.3428535879.

The spelling of 8041213 in words is "eight million, forty-one thousand, two hundred thirteen".

Divisors: 1 53 173 877 9169 46481 151721 8041213