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232315140 = 22353871919
BaseRepresentation
bin11011101100011…
…01100100000100
3121012010211110110
431312031210010
5433433041030
635015153020
75520434421
oct1566154404
9535124413
10232315140
1110a154892
1265975770
133918cca5
1422bd4d48
15155de1b0
hexdd8d904

232315140 has 24 divisors (see below), whose sum is σ = 650482560. Its totient is φ = 61950688.

The previous prime is 232315133. The next prime is 232315141. The reversal of 232315140 is 41513232.

It is not an unprimeable number, because it can be changed into a prime (232315141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1935900 + ... + 1936019.

It is an arithmetic number, because the mean of its divisors is an integer number (27103440).

Almost surely, 2232315140 is an apocalyptic number.

232315140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232315140 is an abundant number, since it is smaller than the sum of its proper divisors (418167420).

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

232315140 is a wasteful number, since it uses less digits than its factorization.

232315140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871931 (or 3871929 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 232315140 is about 15241.8876783685. The cubic root of 232315140 is about 614.7414604997.

Adding to 232315140 its reverse (41513232), we get a palindrome (273828372).

The spelling of 232315140 in words is "two hundred thirty-two million, three hundred fifteen thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 3871919 7743838 11615757 15487676 19359595 23231514 38719190 46463028 58078785 77438380 116157570 232315140