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144578380 = 22523573067
BaseRepresentation
bin10001001111000…
…01011101001100
3101002001100020211
420213201131030
5244003002010
622202452204
73403616212
oct1047413514
9332040224
10144578380
1174679971
1240504064
1323c5124b
14152b6cb2
15ca5d08a
hex89e174c

144578380 has 24 divisors (see below), whose sum is σ = 303842448. Its totient is φ = 57787968.

The previous prime is 144578347. The next prime is 144578381. The reversal of 144578380 is 83875441.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (144578381) 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, 45607 + ... + 48673.

It is an arithmetic number, because the mean of its divisors is an integer number (12660102).

Almost surely, 2144578380 is an apocalyptic number.

144578380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144578380 is an abundant number, since it is smaller than the sum of its proper divisors (159264068).

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

144578380 is a wasteful number, since it uses less digits than its factorization.

144578380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433 (or 5431 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 144578380 is about 12024.0750163994. The cubic root of 144578380 is about 524.8490934377.

The spelling of 144578380 in words is "one hundred forty-four million, five hundred seventy-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 2357 3067 4714 6134 9428 11785 12268 15335 23570 30670 47140 61340 7228919 14457838 28915676 36144595 72289190 144578380