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30220422 = 236597643
BaseRepresentation
bin111001101001…
…0000010000110
32002212100121220
41303102002012
530214023142
62555421210
7514604121
oct163220206
962770556
1030220422
1116071061
12a154806
13635140b
1440293b8
1529be2ec
hex1cd2086

30220422 has 16 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 10056872.

The previous prime is 30220397. The next prime is 30220429. The reversal of 30220422 is 22402203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220429) 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, 133 + ... + 7775.

It is an arithmetic number, because the mean of its divisors is an integer number (3783780).

Almost surely, 230220422 is an apocalyptic number.

30220422 is an abundant number, since it is smaller than the sum of its proper divisors (30320058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30220422 is a wasteful number, since it uses less digits than its factorization.

30220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8307.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 30220422 is about 5497.3104332937. The cubic root of 30220422 is about 311.4823970396.

Adding to 30220422 its reverse (22402203), we get a palindrome (52622625).

The spelling of 30220422 in words is "thirty million, two hundred twenty thousand, four hundred twenty-two".

Divisors: 1 2 3 6 659 1318 1977 3954 7643 15286 22929 45858 5036737 10073474 15110211 30220422