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145461828 = 22312121819
BaseRepresentation
bin10001010101110…
…01001001000100
3101010201020010010
420222321021010
5244214234303
622233430220
73414255651
oct1052711104
9333636103
10145461828
1175122696
124086b370
13241a03b5
1415466c28
15cb84c03
hex8ab9244

145461828 has 12 divisors (see below), whose sum is σ = 339410960. Its totient is φ = 48487272.

The previous prime is 145461817. The next prime is 145461829. The reversal of 145461828 is 828164541.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (145461829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060898 + ... + 6060921.

Almost surely, 2145461828 is an apocalyptic number.

It is an amenable number.

145461828 is an abundant number, since it is smaller than the sum of its proper divisors (193949132).

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

145461828 is a wasteful number, since it uses less digits than its factorization.

145461828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121826 (or 12121824 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 145461828 is about 12060.7556977165. The cubic root of 145461828 is about 525.9159556719.

The spelling of 145461828 in words is "one hundred forty-five million, four hundred sixty-one thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 12 12121819 24243638 36365457 48487276 72730914 145461828