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30709284 = 2236533919
BaseRepresentation
bin111010100100…
…1011000100100
32010210012012220
41311021120210
530330144114
63014112340
7522011304
oct165113044
963705186
1030709284
1116375381
12a34b6b0
136492a98
144115604
152a690a9
hex1d49624

30709284 has 24 divisors (see below), whose sum is σ = 71783040. Its totient is φ = 10218144.

The previous prime is 30709277. The next prime is 30709331. The reversal of 30709284 is 48290703.

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 7 ways as a sum of consecutive naturals, for example, 5877 + ... + 9795.

It is an arithmetic number, because the mean of its divisors is an integer number (2990960).

Almost surely, 230709284 is an apocalyptic number.

It is an amenable number.

30709284 is an abundant number, since it is smaller than the sum of its proper divisors (41073756).

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

30709284 is a wasteful number, since it uses less digits than its factorization.

30709284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579 (or 4577 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 30709284 is about 5541.5957990456. The cubic root of 30709284 is about 313.1529906333.

Adding to 30709284 its reverse (48290703), we get a palindrome (78999987).

The spelling of 30709284 in words is "thirty million, seven hundred nine thousand, two hundred eighty-four".