Search a number
-
+
1304948980 = 22565247449
BaseRepresentation
bin100110111000111…
…1111000011110100
310100221111021110201
41031301333003310
510133031331410
6333253330244
744223611656
oct11561770364
93327437421
101304948980
1160a678535
12305036984
1317a47b77a
14c544c6d6
157986b83a
hex4dc7f0f4

1304948980 has 12 divisors (see below), whose sum is σ = 2740392900. Its totient is φ = 521979584.

The previous prime is 1304948963. The next prime is 1304949001. The reversal of 1304948980 is 898494031.

It can be written as a sum of positive squares in 2 ways, for example, as 180956304 + 1123992676 = 13452^2 + 33526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1304948980.

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, 32623705 + ... + 32623744.

It is an arithmetic number, because the mean of its divisors is an integer number (228366075).

Almost surely, 21304948980 is an apocalyptic number.

1304948980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304948980 is an abundant number, since it is smaller than the sum of its proper divisors (1435443920).

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

1304948980 is a wasteful number, since it uses less digits than its factorization.

1304948980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65247458 (or 65247456 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1304948980 is about 36124.0775660777. The cubic root of 1304948980 is about 1092.7760733046.

The spelling of 1304948980 in words is "one billion, three hundred four million, nine hundred forty-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 65247449 130494898 260989796 326237245 652474490 1304948980