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27398930 = 2513210761
BaseRepresentation
bin110100010000…
…1001100010010
31220120000021012
41220201030102
524003231210
62415130522
7451613156
oct150411422
956500235
1027398930
1114514249
129213a42
1358a40b0
1438d3066
152613305
hex1a21312

27398930 has 16 divisors (see below), whose sum is σ = 53112024. Its totient is φ = 10116480.

The previous prime is 27398929. The next prime is 27398953. The reversal of 27398930 is 3989372.

It can be written as a sum of positive squares in 4 ways, for example, as 19775809 + 7623121 = 4447^2 + 2761^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105251 + ... + 105510.

Almost surely, 227398930 is an apocalyptic number.

27398930 is a deficient number, since it is larger than the sum of its proper divisors (25713094).

27398930 is a wasteful number, since it uses less digits than its factorization.

27398930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210781.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 27398930 is about 5234.3987238268. The cubic root of 27398930 is about 301.4703007983.

The spelling of 27398930 in words is "twenty-seven million, three hundred ninety-eight thousand, nine hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 210761 421522 1053805 2107610 2739893 5479786 13699465 27398930