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146211091 = 1311247007
BaseRepresentation
bin10001011011100…
…00000100010011
3101012010021220121
420231300010103
5244412223331
622301451111
73423526255
oct1055600423
9335107817
10146211091
1175594614
1240b70a97
13243a3450
14155bdcd5
15cc81c11
hex8b70113

146211091 has 4 divisors (see below), whose sum is σ = 157458112. Its totient is φ = 134964072.

The previous prime is 146211053. The next prime is 146211103. The reversal of 146211091 is 190112641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 146211091 - 27 = 146210963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146221091) 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, 5623491 + ... + 5623516.

It is an arithmetic number, because the mean of its divisors is an integer number (39364528).

Almost surely, 2146211091 is an apocalyptic number.

146211091 is a deficient number, since it is larger than the sum of its proper divisors (11247021).

146211091 is a wasteful number, since it uses less digits than its factorization.

146211091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247020.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 146211091 is about 12091.7778262752. Note that the first 3 decimals coincide. The cubic root of 146211091 is about 526.8173942799.

The spelling of 146211091 in words is "one hundred forty-six million, two hundred eleven thousand, ninety-one".

Divisors: 1 13 11247007 146211091