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144247960 = 23531116329
BaseRepresentation
bin10001001100100…
…00110010011000
3101001102120000001
420212100302120
5243411413320
622151422344
73401041663
oct1046206230
9331376001
10144247960
117447369a
12403849b4
1323b66a2c
141522c6da
15c9e520a
hex8990c98

144247960 has 32 divisors (see below), whose sum is σ = 335030400. Its totient is φ = 55837440.

The previous prime is 144247949. The next prime is 144247967. The reversal of 144247960 is 69742441.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144247967) 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, 56925 + ... + 59404.

It is an arithmetic number, because the mean of its divisors is an integer number (10469700).

Almost surely, 2144247960 is an apocalyptic number.

144247960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144247960 is an abundant number, since it is smaller than the sum of its proper divisors (190782440).

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

144247960 is a wasteful number, since it uses less digits than its factorization.

144247960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116371 (or 116367 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 144247960 is about 12010.3272228528. The cubic root of 144247960 is about 524.4489577293.

The spelling of 144247960 in words is "one hundred forty-four million, two hundred forty-seven thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 116329 232658 465316 581645 930632 1163290 2326580 3606199 4653160 7212398 14424796 18030995 28849592 36061990 72123980 144247960