Search a number
-
+
142808630 = 2531460673
BaseRepresentation
bin10001000001100…
…01011000110110
3100221201102121112
420200301120312
5243024334010
622100515022
73352565456
oct1040613066
9327642545
10142808630
1173680268
123b9aba72
1323781863
1414d75d66
15c80da05
hex8831636

142808630 has 16 divisors (see below), whose sum is σ = 265348224. Its totient is φ = 55280640.

The previous prime is 142808629. The next prime is 142808657. The reversal of 142808630 is 36808241.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 230027 + ... + 230646.

It is an arithmetic number, because the mean of its divisors is an integer number (16584264).

Almost surely, 2142808630 is an apocalyptic number.

142808630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142808630 is a deficient number, since it is larger than the sum of its proper divisors (122539594).

142808630 is a wasteful number, since it uses less digits than its factorization.

142808630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460711.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 142808630 is about 11950.2564826032. The cubic root of 142808630 is about 522.6987774167.

The spelling of 142808630 in words is "one hundred forty-two million, eight hundred eight thousand, six hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 460673 921346 2303365 4606730 14280863 28561726 71404315 142808630