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30837380 = 22571911593
BaseRepresentation
bin111010110100…
…0101010000100
32011000200221012
41311220222010
530343244010
63020541352
7523053620
oct165505204
964020835
1030837380
1116452642
12a3b1858
136509192
14414a180
152a92005
hex1d68a84

30837380 has 48 divisors (see below), whose sum is σ = 77911680. Its totient is φ = 10015488.

The previous prime is 30837379. The next prime is 30837383. The reversal of 30837380 is 8373803.

It is not an unprimeable number, because it can be changed into a prime (30837383) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3137 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (1623160).

Almost surely, 230837380 is an apocalyptic number.

It is an amenable number.

30837380 is an abundant number, since it is smaller than the sum of its proper divisors (47074300).

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

30837380 is a wasteful number, since it uses less digits than its factorization.

30837380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11628 (or 11626 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30837380 is about 5553.1414532677. The cubic root of 30837380 is about 313.5877994221.

The spelling of 30837380 in words is "thirty million, eight hundred thirty-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 19 20 28 35 38 70 76 95 133 140 190 266 380 532 665 1330 2660 11593 23186 46372 57965 81151 115930 162302 220267 231860 324604 405755 440534 811510 881068 1101335 1541869 1623020 2202670 3083738 4405340 6167476 7709345 15418690 30837380