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30958068 = 22319135781
BaseRepresentation
bin111011000011…
…0000111110100
32011020211111010
41312012013310
530411124233
63023312220
7524065521
oct166060764
964224433
1030958068
1116525289
12a44b670
13654c0ab
14417c148
152ab7b63
hex1d861f4

30958068 has 24 divisors (see below), whose sum is σ = 76037920. Its totient is φ = 9776160.

The previous prime is 30958063. The next prime is 30958073. The reversal of 30958068 is 86085903.

It is an interprime number because it is at equal distance from previous prime (30958063) and next prime (30958073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30958061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67663 + ... + 68118.

Almost surely, 230958068 is an apocalyptic number.

30958068 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30958068 is an abundant number, since it is smaller than the sum of its proper divisors (45079852).

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

30958068 is a wasteful number, since it uses less digits than its factorization.

30958068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135807 (or 135805 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 30958068 is about 5563.9974838240. The cubic root of 30958068 is about 313.9963622173.

The spelling of 30958068 in words is "thirty million, nine hundred fifty-eight thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 135781 271562 407343 543124 814686 1629372 2579839 5159678 7739517 10319356 15479034 30958068