Search a number
-
+
142808615 = 5295916693
BaseRepresentation
bin10001000001100…
…01011000100111
3100221201102120222
420200301120213
5243024333430
622100514555
73352565435
oct1040613047
9327642528
10142808615
1173680254
123b9aba5b
1323781851
1414d75d55
15c80d9e5
hex8831627

142808615 has 16 divisors (see below), whose sum is σ = 180295200. Its totient is φ = 108431232.

The previous prime is 142808597. The next prime is 142808623. The reversal of 142808615 is 516808241.

It is not a de Polignac number, because 142808615 - 28 = 142808359 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 209 + ... + 16901.

It is an arithmetic number, because the mean of its divisors is an integer number (11268450).

Almost surely, 2142808615 is an apocalyptic number.

142808615 is a deficient number, since it is larger than the sum of its proper divisors (37486585).

142808615 is a wasteful number, since it uses less digits than its factorization.

142808615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16786.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 142808615 is about 11950.2558550016. The cubic root of 142808615 is about 522.6987591160.

The spelling of 142808615 in words is "one hundred forty-two million, eight hundred eight thousand, six hundred fifteen".

Divisors: 1 5 29 59 145 295 1711 8555 16693 83465 484097 984887 2420485 4924435 28561723 142808615