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64152135 = 3351727953
BaseRepresentation
bin1111010010111…
…0001001000111
311110201021012000
43310232021013
5112410332020
610211000343
71406166315
oct364561107
9143637160
1064152135
11332374a3
12195990b3
13103a1b58
14873d0b5
155973090
hex3d2e247

64152135 has 32 divisors (see below), whose sum is σ = 120761280. Its totient is φ = 32200704.

The previous prime is 64152131. The next prime is 64152139. The reversal of 64152135 is 53125146.

64152135 is a `hidden beast` number, since 641 + 5 + 2 + 13 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (64152131) and next prime (64152139).

It is not a de Polignac number, because 64152135 - 22 = 64152131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 64152099 and 64152108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64152131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11682 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (3773790).

Almost surely, 264152135 is an apocalyptic number.

64152135 is a deficient number, since it is larger than the sum of its proper divisors (56609145).

64152135 is a wasteful number, since it uses less digits than its factorization.

64152135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27984 (or 27978 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 64152135 is about 8009.5027935572. The cubic root of 64152135 is about 400.3166971078.

The spelling of 64152135 in words is "sixty-four million, one hundred fifty-two thousand, one hundred thirty-five".

Divisors: 1 3 5 9 15 17 27 45 51 85 135 153 255 459 765 2295 27953 83859 139765 251577 419295 475201 754731 1257885 1425603 2376005 3773655 4276809 7128015 12830427 21384045 64152135