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30223061 = 112747551
BaseRepresentation
bin111001101001…
…0101011010101
32002212111020122
41303102223111
530214114221
62555441325
7514614611
oct163225325
962774218
1030223061
1116073040
12a156245
13635268b
14402a341
1529beeab
hex1cd2ad5

30223061 has 4 divisors (see below), whose sum is σ = 32970624. Its totient is φ = 27475500.

The previous prime is 30223057. The next prime is 30223069. The reversal of 30223061 is 16032203.

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 30223061 - 22 = 30223057 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 (30223069) 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, 1373765 + ... + 1373786.

It is an arithmetic number, because the mean of its divisors is an integer number (8242656).

Almost surely, 230223061 is an apocalyptic number.

It is an amenable number.

30223061 is a deficient number, since it is larger than the sum of its proper divisors (2747563).

30223061 is a wasteful number, since it uses less digits than its factorization.

30223061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747562.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30223061 is about 5497.5504545206. The cubic root of 30223061 is about 311.4914635148.

Adding to 30223061 its reverse (16032203), we get a palindrome (46255264).

The spelling of 30223061 in words is "thirty million, two hundred twenty-three thousand, sixty-one".

Divisors: 1 11 2747551 30223061