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30969882 = 2321720549
BaseRepresentation
bin111011000100…
…1000000011010
32011021102200200
41312021000122
530412014012
63023443030
7524145126
oct166110032
964242620
1030969882
1116533149
12a456476
136554598
144182586
152abb3dc
hex1d8901a

30969882 has 12 divisors (see below), whose sum is σ = 67101450. Its totient is φ = 10323288.

The previous prime is 30969881. The next prime is 30969893. The reversal of 30969882 is 28896903.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 2996361 = 5289^2 + 1731^2 .

It is not an unprimeable number, because it can be changed into a prime (30969881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860257 + ... + 860292.

Almost surely, 230969882 is an apocalyptic number.

30969882 is an abundant number, since it is smaller than the sum of its proper divisors (36131568).

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

30969882 is a wasteful number, since it uses less digits than its factorization.

30969882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720557 (or 1720554 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 30969882 is about 5565.0590293365. The cubic root of 30969882 is about 314.0362988315.

The spelling of 30969882 in words is "thirty million, nine hundred sixty-nine thousand, eight hundred eighty-two".

Divisors: 1 2 3 6 9 18 1720549 3441098 5161647 10323294 15484941 30969882