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245575660 = 225113730169
BaseRepresentation
bin11101010001100…
…10111111101100
3122010002112110211
432220302333230
51000331410120
640211312204
76041234011
oct1650627754
9563075424
10245575660
111166916a0
126a2ab664
133bb53955
1424887708
151685d25a
hexea32fec

245575660 has 48 divisors (see below), whose sum is σ = 577815840. Its totient is φ = 86883840.

The previous prime is 245575643. The next prime is 245575661. The reversal of 245575660 is 66575542.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (245575661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6945 + ... + 23224.

It is an arithmetic number, because the mean of its divisors is an integer number (12037830).

Almost surely, 2245575660 is an apocalyptic number.

245575660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245575660 is an abundant number, since it is smaller than the sum of its proper divisors (332240180).

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

245575660 is a wasteful number, since it uses less digits than its factorization.

245575660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30226 (or 30224 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 245575660 is about 15670.8538376184. The cubic root of 245575660 is about 626.2221717163. Note that the first 3 decimals are identical.

The spelling of 245575660 in words is "two hundred forty-five million, five hundred seventy-five thousand, six hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 37 44 55 74 110 148 185 220 370 407 740 814 1628 2035 4070 8140 30169 60338 120676 150845 301690 331859 603380 663718 1116253 1327436 1659295 2232506 3318590 4465012 5581265 6637180 11162530 12278783 22325060 24557566 49115132 61393915 122787830 245575660