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144056740 = 2257398669
BaseRepresentation
bin10001001011000…
…10000110100100
3101001001211200211
420211202012210
5243334303430
622143345204
73366314332
oct1045420644
9331054624
10144056740
1174352a63
12402b2204
1323aca999
14151bcb52
15c9a872a
hex89621a4

144056740 has 24 divisors (see below), whose sum is σ = 306666360. Its totient is φ = 56832768.

The previous prime is 144056729. The next prime is 144056743. The reversal of 144056740 is 47650441.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 143856036 = 448^2 + 11994^2 .

It is not an unprimeable number, because it can be changed into a prime (144056743) 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, 47875 + ... + 50794.

It is an arithmetic number, because the mean of its divisors is an integer number (12777765).

Almost surely, 2144056740 is an apocalyptic number.

144056740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144056740 is an abundant number, since it is smaller than the sum of its proper divisors (162609620).

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

144056740 is a wasteful number, since it uses less digits than its factorization.

144056740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98751 (or 98749 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 144056740 is about 12002.3639338257. The cubic root of 144056740 is about 524.2171127956.

The spelling of 144056740 in words is "one hundred forty-four million, fifty-six thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 98669 197338 394676 493345 986690 1973380 7202837 14405674 28811348 36014185 72028370 144056740