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72794493 = 32174753191
BaseRepresentation
bin1000101011011…
…00000101111101
312001222100021100
410111230011331
5122113410433
611120123313
71542512562
oct425540575
9161870240
1072794493
11380aa642
1220466539
1312109785
14994c869
1565cdb13
hex456c17d

72794493 has 48 divisors (see below), whose sum is σ = 116453376. Its totient is φ = 43630080.

The previous prime is 72794489. The next prime is 72794497. The reversal of 72794493 is 39449727.

72794493 is a `hidden beast` number, since 72 + 7 + 94 + 493 = 666.

It is an interprime number because it is at equal distance from previous prime (72794489) and next prime (72794497).

It is not a de Polignac number, because 72794493 - 22 = 72794489 is a prime.

It is a super-2 number, since 2×727944932 = 10598076422254098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72794497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 381028 + ... + 381218.

It is an arithmetic number, because the mean of its divisors is an integer number (2426112).

Almost surely, 272794493 is an apocalyptic number.

It is an amenable number.

72794493 is a deficient number, since it is larger than the sum of its proper divisors (43658883).

72794493 is a wasteful number, since it uses less digits than its factorization.

72794493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 311 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 72794493 is about 8531.9688817998. The cubic root of 72794493 is about 417.5413668120.

The spelling of 72794493 in words is "seventy-two million, seven hundred ninety-four thousand, four hundred ninety-three".

Divisors: 1 3 9 17 47 51 53 141 153 159 191 423 477 573 799 901 1719 2397 2491 2703 3247 7191 7473 8109 8977 9741 10123 22419 26931 29223 30369 42347 80793 91107 127041 152609 172091 381123 457827 475781 516273 1373481 1427343 1548819 4282029 8088277 24264831 72794493