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2551026260 = 2251937917713
BaseRepresentation
bin1001100000001101…
…1001001001010100
320120210012120011002
42120003121021110
520211030320020
61101045202432
7120134236226
oct23003311124
96523176132
102551026260
111099a95872
125b2400418
133186869c3
141a2b34416
15ede59975
hex980d9254

2551026260 has 48 divisors (see below), whose sum is σ = 5654308800. Its totient is φ = 964099584.

The previous prime is 2551026259. The next prime is 2551026271. The reversal of 2551026260 is 626201552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135164 + ... + 152876.

It is an arithmetic number, because the mean of its divisors is an integer number (117798100).

Almost surely, 22551026260 is an apocalyptic number.

2551026260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551026260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827154400).

2551026260 is an abundant number, since it is smaller than the sum of its proper divisors (3103282540).

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

2551026260 is a wasteful number, since it uses less digits than its factorization.

2551026260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18120 (or 18118 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2551026260 is about 50507.6851578054. The cubic root of 2551026260 is about 1366.3804610536.

The spelling of 2551026260 in words is "two billion, five hundred fifty-one million, twenty-six thousand, two hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 379 380 758 1516 1895 3790 7201 7580 14402 17713 28804 35426 36005 70852 72010 88565 144020 177130 336547 354260 673094 1346188 1682735 3365470 6713227 6730940 13426454 26852908 33566135 67132270 127551313 134264540 255102626 510205252 637756565 1275513130 2551026260