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30868532 = 2217453949
BaseRepresentation
bin111010111000…
…0010000110100
32011002021122222
41311300100310
530400243112
63021341512
7523243502
oct165602064
964067588
1030868532
1116473a92
12a407898
13651a406
144157672
152a9b372
hex1d70434

30868532 has 12 divisors (see below), whose sum is σ = 57197700. Its totient is φ = 14526336.

The previous prime is 30868517. The next prime is 30868547. The reversal of 30868532 is 23586803.

It is an interprime number because it is at equal distance from previous prime (30868517) and next prime (30868547).

It can be written as a sum of positive squares in 2 ways, for example, as 13512976 + 17355556 = 3676^2 + 4166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30868492 and 30868501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226907 + ... + 227042.

It is an arithmetic number, because the mean of its divisors is an integer number (4766475).

Almost surely, 230868532 is an apocalyptic number.

It is an amenable number.

30868532 is a deficient number, since it is larger than the sum of its proper divisors (26329168).

30868532 is a wasteful number, since it uses less digits than its factorization.

30868532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453970 (or 453968 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 30868532 is about 5555.9456440826. The cubic root of 30868532 is about 313.6933596162.

The spelling of 30868532 in words is "thirty million, eight hundred sixty-eight thousand, five hundred thirty-two".

Divisors: 1 2 4 17 34 68 453949 907898 1815796 7717133 15434266 30868532