Search a number
-
+
2028464860 = 225891139587
BaseRepresentation
bin111100011100111…
…1110101011011100
312020100220200200011
41320321332223130
513123241333420
6533141013004
7101160444502
oct17071765334
95210820604
102028464860
11951019744
124873b4164
13264332686
14153588672
15bd13695a
hex78e7eadc

2028464860 has 24 divisors (see below), whose sum is σ = 4307642640. Its totient is φ = 802268544.

The previous prime is 2028464839. The next prime is 2028464887. The reversal of 2028464860 is 684648202.

It is a super-2 number, since 2×20284648602 = 8229339376509639200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568014 + ... + 571573.

It is an arithmetic number, because the mean of its divisors is an integer number (179485110).

Almost surely, 22028464860 is an apocalyptic number.

2028464860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028464860 is an abundant number, since it is smaller than the sum of its proper divisors (2279177780).

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

2028464860 is a wasteful number, since it uses less digits than its factorization.

2028464860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139685 (or 1139683 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 2028464860 is about 45038.4819904046. The cubic root of 2028464860 is about 1265.8701611422.

The spelling of 2028464860 in words is "two billion, twenty-eight million, four hundred sixty-four thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 89 178 356 445 890 1780 1139587 2279174 4558348 5697935 11395870 22791740 101423243 202846486 405692972 507116215 1014232430 2028464860