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30985286 = 216939151
BaseRepresentation
bin111011000110…
…0110001000110
32011022012211012
41312030301012
530413012121
63024042222
7524241053
oct166146106
964265735
1030985286
1116543782
12a463372
13655b5b7
14418802a
152ac0c5b
hex1d8cc46

30985286 has 8 divisors (see below), whose sum is σ = 46510464. Its totient is φ = 15481800.

The previous prime is 30985277. The next prime is 30985313. The reversal of 30985286 is 68258903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190 + ... + 7961.

It is an arithmetic number, because the mean of its divisors is an integer number (5813808).

Almost surely, 230985286 is an apocalyptic number.

30985286 is a deficient number, since it is larger than the sum of its proper divisors (15525178).

30985286 is a wasteful number, since it uses less digits than its factorization.

30985286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10846.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 30985286 is about 5566.4428497920. The cubic root of 30985286 is about 314.0883560027.

The spelling of 30985286 in words is "thirty million, nine hundred eighty-five thousand, two hundred eighty-six".

Divisors: 1 2 1693 3386 9151 18302 15492643 30985286