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2405252660 = 225120262633
BaseRepresentation
bin1000111101011101…
…0011111000110100
320012121220111100212
42033113103320310
514411221041120
61034400524552
7113414211266
oct21727237064
96177814325
102405252660
11102477aa18
12571620758
132c4407735
1418b629b36
15e12626c5
hex8f5d3e34

2405252660 has 12 divisors (see below), whose sum is σ = 5051030628. Its totient is φ = 962101056.

The previous prime is 2405252611. The next prime is 2405252677. The reversal of 2405252660 is 662525042.

It can be written as a sum of positive squares in 2 ways, for example, as 784224016 + 1621028644 = 28004^2 + 40262^2 .

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, 60131297 + ... + 60131336.

It is an arithmetic number, because the mean of its divisors is an integer number (420919219).

Almost surely, 22405252660 is an apocalyptic number.

2405252660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405252660 is an abundant number, since it is smaller than the sum of its proper divisors (2645777968).

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

2405252660 is a wasteful number, since it uses less digits than its factorization.

2405252660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120262642 (or 120262640 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2405252660 is about 49043.3752916742. The cubic root of 2405252660 is about 1339.8419394765.

The spelling of 2405252660 in words is "two billion, four hundred five million, two hundred fifty-two thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 120262633 240525266 481050532 601313165 1202626330 2405252660