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815114493 = 32432106239
BaseRepresentation
bin110000100101011…
…010100011111101
32002210210002212200
4300211122203331
53132132130433
6212514422113
726125234044
oct6045324375
92083702780
10815114493
11389124646
121a8b91939
13ccb4568b
147a38155b
154b860613
hex3095a8fd

815114493 has 12 divisors (see below), whose sum is σ = 1204769280. Its totient is φ = 530771976.

The previous prime is 815114449. The next prime is 815114537. The reversal of 815114493 is 394411518.

815114493 is a `hidden beast` number, since 8 + 151 + 14 + 493 = 666.

It is an interprime number because it is at equal distance from previous prime (815114449) and next prime (815114537).

It is not a de Polignac number, because 815114493 - 213 = 815106301 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815114593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1052733 + ... + 1053506.

It is an arithmetic number, because the mean of its divisors is an integer number (100397440).

Almost surely, 2815114493 is an apocalyptic number.

It is an amenable number.

815114493 is a deficient number, since it is larger than the sum of its proper divisors (389654787).

815114493 is a wasteful number, since it uses less digits than its factorization.

815114493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106288 (or 2106285 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 815114493 is about 28550.2100342537. The cubic root of 815114493 is about 934.1276021009.

The spelling of 815114493 in words is "eight hundred fifteen million, one hundred fourteen thousand, four hundred ninety-three".

Divisors: 1 3 9 43 129 387 2106239 6318717 18956151 90568277 271704831 815114493