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144807928 = 2318100991
BaseRepresentation
bin10001010000110…
…01011111111000
3101002111000010121
420220121133320
5244032323203
622211423024
73405563356
oct1050313770
9332430117
10144807928
1174816381
12405b4a74
1324001885
14153367d6
15caa60bd
hex8a197f8

144807928 has 8 divisors (see below), whose sum is σ = 271514880. Its totient is φ = 72403960.

The previous prime is 144807919. The next prime is 144807953. The reversal of 144807928 is 829708441.

144807928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9050488 + ... + 9050503.

It is an arithmetic number, because the mean of its divisors is an integer number (33939360).

Almost surely, 2144807928 is an apocalyptic number.

It is an amenable number.

144807928 is a deficient number, since it is larger than the sum of its proper divisors (126706952).

144807928 is a wasteful number, since it uses less digits than its factorization.

144807928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18100997 (or 18100993 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 144807928 is about 12033.6165802306. The cubic root of 144807928 is about 525.1267152938.

The spelling of 144807928 in words is "one hundred forty-four million, eight hundred seven thousand, nine hundred twenty-eight".

Divisors: 1 2 4 8 18100991 36201982 72403964 144807928