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234251220 = 22357557741
BaseRepresentation
bin11011111011001…
…10001111010100
3121022210012021010
431331212033110
5434432014340
635124452220
75543050110
oct1575461724
9538705233
10234251220
11110257455
126654a070
13396ba2b8
142317a740
1515872b80
hexdf663d4

234251220 has 48 divisors (see below), whose sum is σ = 749605248. Its totient is φ = 53543040.

The previous prime is 234251203. The next prime is 234251239. The reversal of 234251220 is 22152432.

234251220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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, 278451 + ... + 279290.

It is an arithmetic number, because the mean of its divisors is an integer number (15616776).

Almost surely, 2234251220 is an apocalyptic number.

234251220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234251220 is an abundant number, since it is smaller than the sum of its proper divisors (515354028).

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

234251220 is a wasteful number, since it uses less digits than its factorization.

234251220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557760 (or 557758 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 234251220 is about 15305.2677206248. The cubic root of 234251220 is about 616.4444598319. Note that the first 4 decimals are identical.

The spelling of 234251220 in words is "two hundred thirty-four million, two hundred fifty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 557741 1115482 1673223 2230964 2788705 3346446 3904187 5577410 6692892 7808374 8366115 11154820 11712561 15616748 16732230 19520935 23425122 33464460 39041870 46850244 58562805 78083740 117125610 234251220