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30350620 = 2251517531
BaseRepresentation
bin111001111000…
…1110100011100
32010002222020001
41303301310130
530232204440
63002304044
7515655526
oct163616434
963088201
1030350620
111614a963
12a1b8024
136398761
144060a16
1529e7b9a
hex1cf1d1c

30350620 has 12 divisors (see below), whose sum is σ = 63736344. Its totient is φ = 12140240.

The previous prime is 30350599. The next prime is 30350629. The reversal of 30350620 is 2605303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30350629) 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, 758746 + ... + 758785.

It is an arithmetic number, because the mean of its divisors is an integer number (5311362).

Almost surely, 230350620 is an apocalyptic number.

It is an amenable number.

30350620 is an abundant number, since it is smaller than the sum of its proper divisors (33385724).

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

30350620 is a wasteful number, since it uses less digits than its factorization.

30350620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517540 (or 1517538 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 30350620 is about 5509.1396787520. The cubic root of 30350620 is about 311.9290738405.

Adding to 30350620 its reverse (2605303), we get a palindrome (32955923).

The spelling of 30350620 in words is "thirty million, three hundred fifty thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 1517531 3035062 6070124 7587655 15175310 30350620