Search a number
-
+
152831289 = 3133918751
BaseRepresentation
bin10010001110000…
…00010100111001
3101122120122010010
421013000110321
5303111100124
623055412133
73534021162
oct1107002471
9348518103
10152831289
11792a6456
1243224049
1325880820
1416424769
15d63d529
hex91c0539

152831289 has 8 divisors (see below), whose sum is σ = 219450112. Its totient is φ = 94050000.

The previous prime is 152831279. The next prime is 152831293. The reversal of 152831289 is 982138251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 152831289 - 28 = 152831033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3918751 = 152831289 / (1 + 5 + 2 + 8 + 3 + 1 + 2 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152831249) 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 7 ways as a sum of consecutive naturals, for example, 1959337 + ... + 1959414.

It is an arithmetic number, because the mean of its divisors is an integer number (27431264).

Almost surely, 2152831289 is an apocalyptic number.

It is an amenable number.

152831289 is a deficient number, since it is larger than the sum of its proper divisors (66618823).

152831289 is a wasteful number, since it uses less digits than its factorization.

152831289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918767.

The product of its digits is 34560, while the sum is 39.

The square root of 152831289 is about 12362.4952578353. The cubic root of 152831289 is about 534.6514619255.

The spelling of 152831289 in words is "one hundred fifty-two million, eight hundred thirty-one thousand, two hundred eighty-nine".

Divisors: 1 3 13 39 3918751 11756253 50943763 152831289