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30969260 = 2257221209
BaseRepresentation
bin111011000100…
…0110110101100
32011021101211122
41312020312230
530412004020
63023440112
7524143250
oct166106654
964241748
1030969260
1116532733
12a456038
13655420a
144182260
152abb125
hex1d88dac

30969260 has 24 divisors (see below), whose sum is σ = 74326560. Its totient is φ = 10617984.

The previous prime is 30969233. The next prime is 30969283. The reversal of 30969260 is 6296903.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 30969260.

It is an unprimeable number.

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, 110465 + ... + 110744.

It is an arithmetic number, because the mean of its divisors is an integer number (3096940).

Almost surely, 230969260 is an apocalyptic number.

It is an amenable number.

30969260 is an abundant number, since it is smaller than the sum of its proper divisors (43357300).

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

30969260 is a wasteful number, since it uses less digits than its factorization.

30969260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221225 (or 221223 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 30969260 is about 5565.0031446532. The cubic root of 30969260 is about 314.0341964461.

Subtracting from 30969260 its sum of digits (35), we obtain a square (30969225 = 55652).

The spelling of 30969260 in words is "thirty million, nine hundred sixty-nine thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 221209 442418 884836 1106045 1548463 2212090 3096926 4424180 6193852 7742315 15484630 30969260