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68650272 = 2532238369
BaseRepresentation
bin1000001011110…
…00010100100000
311210011210110200
410011320110200
5120033302042
610451225200
71462342365
oct405702440
9153153420
1068650272
1135829a69
121aba8200
13112b8382
14919046c
156060c4c
hex4178520

68650272 has 36 divisors (see below), whose sum is σ = 195225030. Its totient is φ = 22883328.

The previous prime is 68650261. The next prime is 68650273. The reversal of 68650272 is 27205686.

68650272 is a `hidden beast` number, since 6 + 86 + 502 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36433296 + 32216976 = 6036^2 + 5676^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68650273) 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, 118897 + ... + 119472.

Almost surely, 268650272 is an apocalyptic number.

It is an amenable number.

68650272 is an abundant number, since it is smaller than the sum of its proper divisors (126574758).

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

68650272 is a wasteful number, since it uses less digits than its factorization.

68650272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238385 (or 238374 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 68650272 is about 8285.5459687337. The cubic root of 68650272 is about 409.4624563612.

The spelling of 68650272 in words is "sixty-eight million, six hundred fifty thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 238369 476738 715107 953476 1430214 1906952 2145321 2860428 3813904 4290642 5720856 7627808 8581284 11441712 17162568 22883424 34325136 68650272