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146512849 = 720930407
BaseRepresentation
bin10001011101110…
…01101111010001
3101012200121211211
420232321233101
5300001402344
622312140121
73426224110
oct1056715721
9335617754
10146512849
11757802aa
1241097641
132447a8c2
141565bc77
15cce1334
hex8bb9bd1

146512849 has 4 divisors (see below), whose sum is σ = 167443264. Its totient is φ = 125582436.

The previous prime is 146512841. The next prime is 146512867. The reversal of 146512849 is 948215641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948215641 = 2341226767.

It is not a de Polignac number, because 146512849 - 23 = 146512841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146512841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10465197 + ... + 10465210.

It is an arithmetic number, because the mean of its divisors is an integer number (41860816).

Almost surely, 2146512849 is an apocalyptic number.

It is an amenable number.

146512849 is a deficient number, since it is larger than the sum of its proper divisors (20930415).

146512849 is an equidigital number, since it uses as much as digits as its factorization.

146512849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20930414.

The product of its digits is 69120, while the sum is 40.

The square root of 146512849 is about 12104.2492125699. The cubic root of 146512849 is about 527.1795695498.

The spelling of 146512849 in words is "one hundred forty-six million, five hundred twelve thousand, eight hundred forty-nine".

Divisors: 1 7 20930407 146512849