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30622423 = 1317138563
BaseRepresentation
bin111010011010…
…0001011010111
32010121210001211
41310310023113
530314404143
63012202251
7521200126
oct164641327
963553054
1030622423
1116316097
12a309387
1364623a0
1440d1abd
152a4d49d
hex1d342d7

30622423 has 8 divisors (see below), whose sum is σ = 34918128. Its totient is φ = 26603904.

The previous prime is 30622411. The next prime is 30622441. The reversal of 30622423 is 32422603.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30622423 - 25 = 30622391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30622394 and 30622403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30622483) 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, 69061 + ... + 69502.

It is an arithmetic number, because the mean of its divisors is an integer number (4364766).

Almost surely, 230622423 is an apocalyptic number.

30622423 is a deficient number, since it is larger than the sum of its proper divisors (4295705).

30622423 is a wasteful number, since it uses less digits than its factorization.

30622423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138593.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 30622423 is about 5533.7530664098. The cubic root of 30622423 is about 312.8574614589.

The spelling of 30622423 in words is "thirty million, six hundred twenty-two thousand, four hundred twenty-three".

Divisors: 1 13 17 221 138563 1801319 2355571 30622423