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144703146 = 23718011913
BaseRepresentation
bin10001001111111…
…11111010101010
3101002021200101210
420213333322222
5244021000041
622205253550
73404646030
oct1047777252
9332250353
10144703146
1174754685
12405642b6
1323c95c83
141530a550
15ca85016
hex89ffeaa

144703146 has 32 divisors (see below), whose sum is σ = 331106688. Its totient is φ = 41299200.

The previous prime is 144703129. The next prime is 144703147. The reversal of 144703146 is 641307441.

It is not an unprimeable number, because it can be changed into a prime (144703147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74686 + ... + 76598.

It is an arithmetic number, because the mean of its divisors is an integer number (10347084).

Almost surely, 2144703146 is an apocalyptic number.

144703146 is an abundant number, since it is smaller than the sum of its proper divisors (186403542).

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

144703146 is a wasteful number, since it uses less digits than its factorization.

144703146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 144703146 is about 12029.2620721306. The cubic root of 144703146 is about 525.0000253968. Note that the first 4 decimals are identical.

The spelling of 144703146 in words is "one hundred forty-four million, seven hundred three thousand, one hundred forty-six".

Divisors: 1 2 3 6 7 14 21 42 1801 1913 3602 3826 5403 5739 10806 11478 12607 13391 25214 26782 37821 40173 75642 80346 3445313 6890626 10335939 20671878 24117191 48234382 72351573 144703146