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216985302 = 23212054739
BaseRepresentation
bin11001110111011…
…10111011010110
3120010021222212200
430323232323112
5421022012202
633310425330
75243226132
oct1473567326
9503258780
10216985302
111015342a6
1260802246
1335c53491
1420b643c2
15140b1e1c
hexceeeed6

216985302 has 12 divisors (see below), whose sum is σ = 470134860. Its totient is φ = 72328428.

The previous prime is 216985283. The next prime is 216985309. The reversal of 216985302 is 203589612.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216985309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6027352 + ... + 6027387.

It is an arithmetic number, because the mean of its divisors is an integer number (39177905).

Almost surely, 2216985302 is an apocalyptic number.

216985302 is an abundant number, since it is smaller than the sum of its proper divisors (253149558).

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

216985302 is a wasteful number, since it uses less digits than its factorization.

216985302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12054747 (or 12054744 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 216985302 is about 14730.4209715812. The cubic root of 216985302 is about 600.9109329686.

It can be divided in two parts, 21698 and 5302, that added together give a cube (27000 = 303).

The spelling of 216985302 in words is "two hundred sixteen million, nine hundred eighty-five thousand, three hundred two".

Divisors: 1 2 3 6 9 18 12054739 24109478 36164217 72328434 108492651 216985302