Search a number
-
+
152167681 = 1371110713
BaseRepresentation
bin10010001000111…
…10010100000001
3101121022220211001
421010132110001
5302423331211
623033252001
73525255361
oct1104362401
9347286731
10152167681
1178992916
1242b64001
13256aa763
14162d09a1
15d55bac1
hex911e501

152167681 has 4 divisors (see below), whose sum is σ = 153278532. Its totient is φ = 151056832.

The previous prime is 152167627. The next prime is 152167699. The reversal of 152167681 is 186761251.

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

It can be written as a sum of positive squares in 2 ways, for example, as 113529025 + 38638656 = 10655^2 + 6216^2 .

It is a cyclic number.

It is not a de Polignac number, because 152167681 - 211 = 152165633 is a prime.

It is a super-2 number, since 2×1521676812 = 46310006281835522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152167681.

It is not an unprimeable number, because it can be changed into a prime (152167601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555220 + ... + 555493.

It is an arithmetic number, because the mean of its divisors is an integer number (38319633).

Almost surely, 2152167681 is an apocalyptic number.

It is an amenable number.

152167681 is a deficient number, since it is larger than the sum of its proper divisors (1110851).

152167681 is a wasteful number, since it uses less digits than its factorization.

152167681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110850.

The product of its digits is 20160, while the sum is 37.

The square root of 152167681 is about 12335.6264940213. The cubic root of 152167681 is about 533.8765033515.

The spelling of 152167681 in words is "one hundred fifty-two million, one hundred sixty-seven thousand, six hundred eighty-one".

Divisors: 1 137 1110713 152167681