Search a number
-
+
8144980 = 225407249
BaseRepresentation
bin11111000100100001010100
3120022210210221
4133010201110
54041114410
6450324124
7126142204
oct37044124
916283727
108144980
114663498
122889644
1318c241c
141120404
15aad4da
hex7c4854

8144980 has 12 divisors (see below), whose sum is σ = 17104500. Its totient is φ = 3257984.

The previous prime is 8144963. The next prime is 8144999. The reversal of 8144980 is 894418.

It can be written as a sum of positive squares in 2 ways, for example, as 2298256 + 5846724 = 1516^2 + 2418^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203605 + ... + 203644.

It is an arithmetic number, because the mean of its divisors is an integer number (1425375).

Almost surely, 28144980 is an apocalyptic number.

It is an amenable number.

8144980 is an abundant number, since it is smaller than the sum of its proper divisors (8959520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8144980 is a wasteful number, since it uses less digits than its factorization.

8144980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407258 (or 407256 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 8144980 is about 2853.9411346417. The cubic root of 8144980 is about 201.2009409371.

The spelling of 8144980 in words is "eight million, one hundred forty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 407249 814498 1628996 2036245 4072490 8144980