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148050391 = 1109133499
BaseRepresentation
bin10001101001100…
…01000111010111
3101022120201221211
420310301013113
5300400103031
622405122251
73445256536
oct1064610727
9338521854
10148050391
11766304a5
12416b9387
13248986a8
141593c31d
15cee6bb1
hex8d311d7

148050391 has 4 divisors (see below), whose sum is σ = 148185000. Its totient is φ = 147915784.

The previous prime is 148050373. The next prime is 148050401. The reversal of 148050391 is 193050841.

148050391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193050841 = 340756663.

It is a cyclic number.

It is not a de Polignac number, because 148050391 - 217 = 147919319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148050311) 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, 65641 + ... + 67858.

It is an arithmetic number, because the mean of its divisors is an integer number (37046250).

Almost surely, 2148050391 is an apocalyptic number.

148050391 is a deficient number, since it is larger than the sum of its proper divisors (134609).

148050391 is a wasteful number, since it uses less digits than its factorization.

148050391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134608.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 148050391 is about 12167.5959416805. The cubic root of 148050391 is about 529.0172735309.

The spelling of 148050391 in words is "one hundred forty-eight million, fifty thousand, three hundred ninety-one".

Divisors: 1 1109 133499 148050391