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30220141 = 710939607
BaseRepresentation
bin111001101000…
…1111101101101
32002212100020111
41303101331231
530214021031
62555420021
7514603240
oct163217555
962770214
1030220141
1116070926
12a154611
136351253
144029257
1529be1b1
hex1cd1f6d

30220141 has 8 divisors (see below), whose sum is σ = 34855040. Its totient is φ = 25664688.

The previous prime is 30220139. The next prime is 30220147. The reversal of 30220141 is 14102203.

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

It is not a de Polignac number, because 30220141 - 21 = 30220139 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 (30220147) 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, 19041 + ... + 20566.

It is an arithmetic number, because the mean of its divisors is an integer number (4356880).

Almost surely, 230220141 is an apocalyptic number.

It is an amenable number.

30220141 is a deficient number, since it is larger than the sum of its proper divisors (4634899).

30220141 is a wasteful number, since it uses less digits than its factorization.

30220141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39723.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30220141 is about 5497.2848752816. The cubic root of 30220141 is about 311.4814316127.

Adding to 30220141 its reverse (14102203), we get a palindrome (44322344).

The spelling of 30220141 in words is "thirty million, two hundred twenty thousand, one hundred forty-one".

Divisors: 1 7 109 763 39607 277249 4317163 30220141