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144605028 = 22337674861
BaseRepresentation
bin10001001111001…
…11111101100100
3101002002200210210
420213213331210
5244004330103
622203215420
73404060001
oct1047477544
9332080723
10144605028
1174697997
1240517570
1323c60409
14152c28a8
15ca65e03
hex89e7f64

144605028 has 48 divisors (see below), whose sum is σ = 351775424. Its totient is φ = 46189440.

The previous prime is 144605023. The next prime is 144605039. The reversal of 144605028 is 820506441.

It is a super-2 number, since 2×1446050282 = 41821228245761568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144604986 and 144605004.

It is not an unprimeable number, because it can be changed into a prime (144605023) 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, 27318 + ... + 32178.

Almost surely, 2144605028 is an apocalyptic number.

It is an amenable number.

144605028 is an abundant number, since it is smaller than the sum of its proper divisors (207170396).

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

144605028 is a wasteful number, since it uses less digits than its factorization.

144605028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972 (or 4970 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 144605028 is about 12025.1830755295. The cubic root of 144605028 is about 524.8813373537.

The spelling of 144605028 in words is "one hundred forty-four million, six hundred five thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 37 67 74 111 134 148 201 222 268 402 444 804 2479 4861 4958 7437 9722 9916 14583 14874 19444 29166 29748 58332 179857 325687 359714 539571 651374 719428 977061 1079142 1302748 1954122 2158284 3908244 12050419 24100838 36151257 48201676 72302514 144605028