Search a number
-
+
151872081 = 3499310139
BaseRepresentation
bin10010000110101…
…10001001010001
3101120202220022220
421003112021101
5302334401311
623023051253
73522614514
oct1103261121
9346686286
10151872081
1178800819
1242a40b29
132560604a
1416254d7b
15d4ee206
hex90d6251

151872081 has 8 divisors (see below), whose sum is σ = 202556640. Its totient is φ = 101217792.

The previous prime is 151872079. The next prime is 151872089. The reversal of 151872081 is 180278151.

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

It is not a de Polignac number, because 151872081 - 21 = 151872079 is a prime.

It is a super-2 number, since 2×1518720812 = 46130257974541122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151872089) 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, 9910 + ... + 20048.

It is an arithmetic number, because the mean of its divisors is an integer number (25319580).

Almost surely, 2151872081 is an apocalyptic number.

It is an amenable number.

151872081 is a deficient number, since it is larger than the sum of its proper divisors (50684559).

151872081 is a wasteful number, since it uses less digits than its factorization.

151872081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15135.

The product of its (nonzero) digits is 4480, while the sum is 33.

The square root of 151872081 is about 12323.6391135086. The cubic root of 151872081 is about 533.5305775211.

The spelling of 151872081 in words is "one hundred fifty-one million, eight hundred seventy-two thousand, eighty-one".

Divisors: 1 3 4993 10139 14979 30417 50624027 151872081