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30022215 = 352001481
BaseRepresentation
bin111001010000…
…1101001000111
32002111021201220
41302201221013
530141202330
62551251423
7513120216
oct162415107
962437656
1030022215
1115a46153
12a079b73
1362b2132
143db707d
152980710
hex1ca1a47

30022215 has 8 divisors (see below), whose sum is σ = 48035568. Its totient is φ = 16011840.

The previous prime is 30022189. The next prime is 30022253. The reversal of 30022215 is 51222003.

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

It is not a de Polignac number, because 30022215 - 25 = 30022183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 2001481 = 30022215 / (3 + 0 + 0 + 2 + 2 + 2 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 30022194 and 30022203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000726 + ... + 1000755.

It is an arithmetic number, because the mean of its divisors is an integer number (6004446).

Almost surely, 230022215 is an apocalyptic number.

30022215 is a deficient number, since it is larger than the sum of its proper divisors (18013353).

30022215 is a wasteful number, since it uses less digits than its factorization.

30022215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001489.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30022215 is about 5479.2531425369. The cubic root of 30022215 is about 310.7999285275.

Adding to 30022215 its reverse (51222003), we get a palindrome (81244218).

The spelling of 30022215 in words is "thirty million, twenty-two thousand, two hundred fifteen".

Divisors: 1 3 5 15 2001481 6004443 10007405 30022215