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152948905 = 530589781
BaseRepresentation
bin10010001110111…
…01000010101001
3101122210121110021
421013131002221
5303123331110
623102120441
73535021114
oct1107350251
9348717407
10152948905
117937685a
1243280121
13258c2215
141645557b
15d6632da
hex91dd0a9

152948905 has 4 divisors (see below), whose sum is σ = 183538692. Its totient is φ = 122359120.

The previous prime is 152948891. The next prime is 152948911. The reversal of 152948905 is 509849251.

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 34857216 + 118091689 = 5904^2 + 10867^2 .

It is a de Polignac number, because none of the positive numbers 2k-152948905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15294886 + ... + 15294895.

It is an arithmetic number, because the mean of its divisors is an integer number (45884673).

Almost surely, 2152948905 is an apocalyptic number.

It is an amenable number.

152948905 is a deficient number, since it is larger than the sum of its proper divisors (30589787).

152948905 is an equidigital number, since it uses as much as digits as its factorization.

152948905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30589786.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 152948905 is about 12367.2513114273. The cubic root of 152948905 is about 534.7885792273.

The spelling of 152948905 in words is "one hundred fifty-two million, nine hundred forty-eight thousand, nine hundred five".

Divisors: 1 5 30589781 152948905