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30771234 = 23213131501
BaseRepresentation
bin111010101100…
…0100000100010
32010220100012100
41311120200202
530334134414
63015311230
7522360024
oct165304042
963810170
1030771234
111640797a
12a37b516
1364b5040
144130014
152a7c609
hex1d58822

30771234 has 24 divisors (see below), whose sum is σ = 71800092. Its totient is φ = 9468000.

The previous prime is 30771227. The next prime is 30771259. The reversal of 30771234 is 43217703.

It can be written as a sum of positive squares in 2 ways, for example, as 30769209 + 2025 = 5547^2 + 45^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30771198 and 30771207.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65517 + ... + 65984.

Almost surely, 230771234 is an apocalyptic number.

30771234 is an abundant number, since it is smaller than the sum of its proper divisors (41028858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30771234 is a wasteful number, since it uses less digits than its factorization.

30771234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131522 (or 131519 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 30771234 is about 5547.1825280948. The cubic root of 30771234 is about 313.3634242516.

Adding to 30771234 its reverse (43217703), we get a palindrome (73988937).

The spelling of 30771234 in words is "thirty million, seven hundred seventy-one thousand, two hundred thirty-four".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 131501 263002 394503 789006 1183509 1709513 2367018 3419026 5128539 10257078 15385617 30771234