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144157254 = 23313720947
BaseRepresentation
bin10001001011110…
…10101001000110
3101001020221120120
420211322221012
5243401013004
622145442410
73400213353
oct1045725106
9331227516
10144157254
117441152a
1240340406
1323b34667
141520762a
15c9c83d9
hex897aa46

144157254 has 32 divisors (see below), whose sum is σ = 305673216. Its totient is φ = 45243360.

The previous prime is 144157253. The next prime is 144157259. The reversal of 144157254 is 452751441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144157253) 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 15 ways as a sum of consecutive naturals, for example, 3592 + ... + 17355.

It is an arithmetic number, because the mean of its divisors is an integer number (9552288).

Almost surely, 2144157254 is an apocalyptic number.

144157254 is an abundant number, since it is smaller than the sum of its proper divisors (161515962).

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

144157254 is a wasteful number, since it uses less digits than its factorization.

144157254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020.

The product of its digits is 22400, while the sum is 33.

The square root of 144157254 is about 12006.5504621436. The cubic root of 144157254 is about 524.3390066844.

The spelling of 144157254 in words is "one hundred forty-four million, one hundred fifty-seven thousand, two hundred fifty-four".

Divisors: 1 2 3 6 31 37 62 74 93 111 186 222 1147 2294 3441 6882 20947 41894 62841 125682 649357 775039 1298714 1550078 1948071 2325117 3896142 4650234 24026209 48052418 72078627 144157254