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2580980 = 225129049
BaseRepresentation
bin1001110110000111110100
311212010102212
421312013310
51130042410
6131152552
730636503
oct11660764
94763385
102580980
111503146
12a45758
136c4a0c
144b283a
1535eb05
hex2761f4

2580980 has 12 divisors (see below), whose sum is σ = 5420100. Its totient is φ = 1032384.

The previous prime is 2580973. The next prime is 2580997. The reversal of 2580980 is 890852.

It can be written as a sum of positive squares in 2 ways, for example, as 1817104 + 763876 = 1348^2 + 874^2 .

It is a super-2 number, since 2×25809802 = 13322915520800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 64505 + ... + 64544.

It is an arithmetic number, because the mean of its divisors is an integer number (451675).

22580980 is an apocalyptic number.

2580980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2580980 is an abundant number, since it is smaller than the sum of its proper divisors (2839120).

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

2580980 is a wasteful number, since it uses less digits than its factorization.

2580980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129058 (or 129056 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2580980 is about 1606.5428721326. The cubic root of 2580980 is about 137.1707604847.

The spelling of 2580980 in words is "two million, five hundred eighty thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 129049 258098 516196 645245 1290490 2580980