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30883291 = 412513001
BaseRepresentation
bin111010111001…
…1110111011011
32011010000220121
41311303313123
530401231131
63021534111
7523334515
oct165636733
964100817
1030883291
111648408a
12a414337
13652404a
14415cbb5
152aa0911
hex1d73ddb

30883291 has 8 divisors (see below), whose sum is σ = 31773168. Its totient is φ = 30000000.

The previous prime is 30883283. The next prime is 30883309. The reversal of 30883291 is 19238803.

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

It is a 7-Lehmer number, since φ(30883291) divides (30883291-1)7.

It is a cyclic number.

It is not a de Polignac number, because 30883291 - 23 = 30883283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30883201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8791 + ... + 11791.

It is an arithmetic number, because the mean of its divisors is an integer number (3971646).

Almost surely, 230883291 is an apocalyptic number.

30883291 is a deficient number, since it is larger than the sum of its proper divisors (889877).

30883291 is a wasteful number, since it uses less digits than its factorization.

30883291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 30883291 is about 5557.2737020953. The cubic root of 30883291 is about 313.7433464724.

The spelling of 30883291 in words is "thirty million, eight hundred eighty-three thousand, two hundred ninety-one".

Divisors: 1 41 251 3001 10291 123041 753251 30883291