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242897460 = 223513311407
BaseRepresentation
bin11100111101001…
…01001000110100
3121221001110200020
432132211020310
5444140204320
640034045140
76006410601
oct1636451064
9557043606
10242897460
11115122503
12694197b0
133b426910
142438b6a8
15164ce940
hexe7a5234

242897460 has 48 divisors (see below), whose sum is σ = 732431616. Its totient is φ = 59789952.

The previous prime is 242897419. The next prime is 242897477. The reversal of 242897460 is 64798242.

242897460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 154924 + ... + 156483.

It is an arithmetic number, because the mean of its divisors is an integer number (15258992).

Almost surely, 2242897460 is an apocalyptic number.

242897460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242897460 is an abundant number, since it is smaller than the sum of its proper divisors (489534156).

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

242897460 is a wasteful number, since it uses less digits than its factorization.

242897460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311432 (or 311430 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 242897460 is about 15585.1679490469. The cubic root of 242897460 is about 623.9373601651.

The spelling of 242897460 in words is "two hundred forty-two million, eight hundred ninety-seven thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 311407 622814 934221 1245628 1557035 1868442 3114070 3736884 4048291 4671105 6228140 8096582 9342210 12144873 16193164 18684420 20241455 24289746 40482910 48579492 60724365 80965820 121448730 242897460