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30814164 = 22321814729
BaseRepresentation
bin111010110001…
…0111111010100
32010222112002100
41311202333110
530342023124
63020242100
7522626133
oct165427724
963875070
1030814164
1116437157
12a3a0330
1364cb744
14414191a
152a8a1c9
hex1d62fd4

30814164 has 36 divisors (see below), whose sum is σ = 78338260. Its totient is φ = 10212480.

The previous prime is 30814163. The next prime is 30814193. The reversal of 30814164 is 46141803.

It can be written as a sum of positive squares in 2 ways, for example, as 476100 + 30338064 = 690^2 + 5508^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30814163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4152 + ... + 8880.

Almost surely, 230814164 is an apocalyptic number.

It is an amenable number.

30814164 is an abundant number, since it is smaller than the sum of its proper divisors (47524096).

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

30814164 is a wasteful number, since it uses less digits than its factorization.

30814164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920 (or 4915 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30814164 is about 5551.0507113519. The cubic root of 30814164 is about 313.5090845410.

Adding to 30814164 its reverse (46141803), we get a palindrome (76955967).

The spelling of 30814164 in words is "thirty million, eight hundred fourteen thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 9 12 18 36 181 362 543 724 1086 1629 2172 3258 4729 6516 9458 14187 18916 28374 42561 56748 85122 170244 855949 1711898 2567847 3423796 5135694 7703541 10271388 15407082 30814164