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30350056 = 2311344887
BaseRepresentation
bin111001111000…
…1101011101000
32010002221110011
41303301223220
530232200211
63002301304
7515654062
oct163615350
963087404
1030350056
111614a4a0
12a1b7834
136398419
144060732
1529e7921
hex1cf1ae8

30350056 has 16 divisors (see below), whose sum is σ = 62079840. Its totient is φ = 13795440.

The previous prime is 30350051. The next prime is 30350093. The reversal of 30350056 is 65005303.

It is a super-2 number, since 2×303500562 = 1842251798406272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (30350051) 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, 172356 + ... + 172531.

It is an arithmetic number, because the mean of its divisors is an integer number (3879990).

Almost surely, 230350056 is an apocalyptic number.

It is an amenable number.

30350056 is an abundant number, since it is smaller than the sum of its proper divisors (31729784).

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

30350056 is a wasteful number, since it uses less digits than its factorization.

30350056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344904 (or 344900 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 30350056 is about 5509.0884908486. The cubic root of 30350056 is about 311.9271416550.

Adding to 30350056 its reverse (65005303), we get a palindrome (95355359).

The spelling of 30350056 in words is "thirty million, three hundred fifty thousand, fifty-six".

Divisors: 1 2 4 8 11 22 44 88 344887 689774 1379548 2759096 3793757 7587514 15175028 30350056