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232453640 = 23523252667
BaseRepresentation
bin11011101101011…
…11011000001000
3121012101212110002
431312233120020
5434002004030
635022142132
75521552256
oct1566573010
9535355402
10232453640
1110a239951
1265a21948
133920b043
1422c2d5d6
151561a245
hexddaf608

232453640 has 32 divisors (see below), whose sum is σ = 545762880. Its totient is φ = 88938432.

The previous prime is 232453633. The next prime is 232453649. The reversal of 232453640 is 46354232.

It is not an unprimeable number, because it can be changed into a prime (232453649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125414 + ... + 127253.

It is an arithmetic number, because the mean of its divisors is an integer number (17055090).

Almost surely, 2232453640 is an apocalyptic number.

232453640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232453640 is an abundant number, since it is smaller than the sum of its proper divisors (313309240).

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

232453640 is a wasteful number, since it uses less digits than its factorization.

232453640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252701 (or 252697 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 232453640 is about 15246.4304019006. The cubic root of 232453640 is about 614.8636003054.

The spelling of 232453640 in words is "two hundred thirty-two million, four hundred fifty-three thousand, six hundred forty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 184 230 460 920 252667 505334 1010668 1263335 2021336 2526670 5053340 5811341 10106680 11622682 23245364 29056705 46490728 58113410 116226820 232453640