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30652213 = 129123743
BaseRepresentation
bin111010011101…
…1011100110101
32010200021221011
41310323130311
530321332323
63012552221
7521353024
oct164733465
963607834
1030652213
1116336509
12a322671
136472b07
1440dc8bb
152a5720d
hex1d3b735

30652213 has 4 divisors (see below), whose sum is σ = 30677248. Its totient is φ = 30627180.

The previous prime is 30652199. The next prime is 30652229. The reversal of 30652213 is 31225603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30652213 - 29 = 30651701 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 (30052213) 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, 10581 + ... + 13162.

It is an arithmetic number, because the mean of its divisors is an integer number (7669312).

Almost surely, 230652213 is an apocalyptic number.

It is an amenable number.

30652213 is a deficient number, since it is larger than the sum of its proper divisors (25035).

30652213 is a wasteful number, since it uses less digits than its factorization.

30652213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25034.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30652213 is about 5536.4440753971. Note that the first 3 decimals coincide. The cubic root of 30652213 is about 312.9588795514.

Adding to 30652213 its reverse (31225603), we get a palindrome (61877816).

The spelling of 30652213 in words is "thirty million, six hundred fifty-two thousand, two hundred thirteen".

Divisors: 1 1291 23743 30652213