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2580819380 = 2251574311907
BaseRepresentation
bin1001100111010100…
…0010110110110100
320122212021012121222
42121311002312310
520241142210010
61104031525512
7120645413516
oct23165026664
96585235558
102580819380
111104894887
12600389898
133218b8779
141a6a8bbb6
15101892355
hex99d42db4

2580819380 has 48 divisors (see below), whose sum is σ = 5469762816. Its totient is φ = 1022835840.

The previous prime is 2580819377. The next prime is 2580819383. The reversal of 2580819380 is 839180852.

2580819380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2580819377) and next prime (2580819383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580819383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1352387 + ... + 1354293.

It is an arithmetic number, because the mean of its divisors is an integer number (113953392).

Almost surely, 22580819380 is an apocalyptic number.

2580819380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2580819380 is an abundant number, since it is smaller than the sum of its proper divisors (2888943436).

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

2580819380 is a wasteful number, since it uses less digits than its factorization.

2580819380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 2580819380 is about 50801.7655205014. The cubic root of 2580819380 is about 1371.6791494741.

The spelling of 2580819380 in words is "two billion, five hundred eighty million, eight hundred nineteen thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 157 314 431 628 785 862 1570 1724 1907 2155 3140 3814 4310 7628 8620 9535 19070 38140 67667 135334 270668 299399 338335 598798 676670 821917 1197596 1353340 1496995 1643834 2993990 3287668 4109585 5987980 8219170 16438340 129040969 258081938 516163876 645204845 1290409690 2580819380