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148023140 = 22531238747
BaseRepresentation
bin10001101001010…
…10011101100100
3101022112100120112
420310222131210
5300343220030
622404352152
73445114226
oct1064523544
9338470515
10148023140
1176611a81
12416a5658
1324889175
1415932416
15cedda95
hex8d2a764

148023140 has 24 divisors (see below), whose sum is σ = 320877312. Its totient is φ = 57299040.

The previous prime is 148023133. The next prime is 148023191. The reversal of 148023140 is 41320841.

It is an unprimeable number.

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, 118754 + ... + 119993.

It is an arithmetic number, because the mean of its divisors is an integer number (13369888).

Almost surely, 2148023140 is an apocalyptic number.

148023140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148023140 is an abundant number, since it is smaller than the sum of its proper divisors (172854172).

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

148023140 is a wasteful number, since it uses less digits than its factorization.

148023140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238787 (or 238785 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 148023140 is about 12166.4760715665. The cubic root of 148023140 is about 528.9848135596.

Adding to 148023140 its reverse (41320841), we get a palindrome (189343981).

The spelling of 148023140 in words is "one hundred forty-eight million, twenty-three thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 238747 477494 954988 1193735 2387470 4774940 7401157 14802314 29604628 37005785 74011570 148023140