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30132941 = 109276449
BaseRepresentation
bin111001011110…
…0101011001101
32002200220121212
41302330223031
530203223231
62553504205
7514061066
oct162745315
962626555
1030132941
1116011363
12a112065
136320657
14400556d
1529a342b
hex1cbcacd

30132941 has 4 divisors (see below), whose sum is σ = 30409500. Its totient is φ = 29856384.

The previous prime is 30132937. The next prime is 30133003. The reversal of 30132941 is 14923103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14923103 = 131147931.

It can be written as a sum of positive squares in 2 ways, for example, as 14364100 + 15768841 = 3790^2 + 3971^2 .

It is a cyclic number.

It is not a de Polignac number, because 30132941 - 22 = 30132937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30132931) 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, 138116 + ... + 138333.

It is an arithmetic number, because the mean of its divisors is an integer number (7602375).

Almost surely, 230132941 is an apocalyptic number.

It is an amenable number.

30132941 is a deficient number, since it is larger than the sum of its proper divisors (276559).

30132941 is a wasteful number, since it uses less digits than its factorization.

30132941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276558.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30132941 is about 5489.3479576358. The cubic root of 30132941 is about 311.1815505140.

The spelling of 30132941 in words is "thirty million, one hundred thirty-two thousand, nine hundred forty-one".

Divisors: 1 109 276449 30132941