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148131486 = 232191812393
BaseRepresentation
bin10001101010001…
…00111010011110
3101022201212012100
420311010322132
5300410201421
622410545530
73446045136
oct1065047236
9338655170
10148131486
1176686418
12417382a6
13248c6589
141595dac6
15d010c26
hex8d44e9e

148131486 has 48 divisors (see below), whose sum is σ = 339852240. Its totient is φ = 46500480.

The previous prime is 148131481. The next prime is 148131499. The reversal of 148131486 is 684131841.

It is a happy number.

148131486 is a `hidden beast` number, since 1 + 48 + 131 + 486 = 666.

148131486 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 148131486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148131481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60706 + ... + 63098.

It is an arithmetic number, because the mean of its divisors is an integer number (7080255).

Almost surely, 2148131486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 148131486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169926120).

148131486 is an abundant number, since it is smaller than the sum of its proper divisors (191720754).

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

148131486 is a wasteful number, since it uses less digits than its factorization.

148131486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2598 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 148131486 is about 12170.9279021774. The cubic root of 148131486 is about 529.1138461120.

The spelling of 148131486 in words is "one hundred forty-eight million, one hundred thirty-one thousand, four hundred eighty-six".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 181 342 362 543 1086 1629 2393 3258 3439 4786 6878 7179 10317 14358 20634 21537 30951 43074 45467 61902 90934 136401 272802 409203 433133 818406 866266 1299399 2598798 3898197 7796394 8229527 16459054 24688581 49377162 74065743 148131486