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87054423 = 340970949
BaseRepresentation
bin1010011000001…
…01100001010111
320001210211012220
411030011201113
5134241220143
612345513423
72104643661
oct514054127
9201724186
1087054423
114515a305
12251a2873
13150602c1
14b7c1531
157998d83
hex5305857

87054423 has 8 divisors (see below), whose sum is σ = 116358000. Its totient is φ = 57893568.

The previous prime is 87054421. The next prime is 87054431. The reversal of 87054423 is 32445078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87054423 - 21 = 87054421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87054421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34248 + ... + 36701.

It is an arithmetic number, because the mean of its divisors is an integer number (14544750).

Almost surely, 287054423 is an apocalyptic number.

87054423 is a deficient number, since it is larger than the sum of its proper divisors (29303577).

87054423 is a wasteful number, since it uses less digits than its factorization.

87054423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71361.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 87054423 is about 9330.2959760128. The cubic root of 87054423 is about 443.1971378928.

The spelling of 87054423 in words is "eighty-seven million, fifty-four thousand, four hundred twenty-three".

Divisors: 1 3 409 1227 70949 212847 29018141 87054423