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2558890380 = 2235160726539
BaseRepresentation
bin1001100010000101…
…1001000110001100
320121100000002200210
42120201121012030
520220033443010
61101525522420
7120261131544
oct23041310614
96540002623
102558890380
1110a3477242
125b4b73410
1331a1ab327
141a3bc0324
15ee9aeb20
hex9885918c

2558890380 has 48 divisors (see below), whose sum is σ = 7169621760. Its totient is φ = 681920448.

The previous prime is 2558890309. The next prime is 2558890387. The reversal of 2558890380 is 830988552.

It is not an unprimeable number, because it can be changed into a prime (2558890387) 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, 83151 + ... + 109689.

It is an arithmetic number, because the mean of its divisors is an integer number (149367120).

Almost surely, 22558890380 is an apocalyptic number.

2558890380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2558890380 is an abundant number, since it is smaller than the sum of its proper divisors (4610731380).

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

2558890380 is a wasteful number, since it uses less digits than its factorization.

2558890380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28158 (or 28156 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 2558890380 is about 50585.4759787827. The cubic root of 2558890380 is about 1367.7830804956.

The spelling of 2558890380 in words is "two billion, five hundred fifty-eight million, eight hundred ninety thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1607 3214 4821 6428 8035 9642 16070 19284 24105 26539 32140 48210 53078 79617 96420 106156 132695 159234 265390 318468 398085 530780 796170 1592340 42648173 85296346 127944519 170592692 213240865 255889038 426481730 511778076 639722595 852963460 1279445190 2558890380