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87995429 = 254334603
BaseRepresentation
bin1010011111010…
…11010000100101
320010120122000222
411033223100211
5140011323204
612422014125
72115643304
oct517532045
9203518028
1087995429
11457422a5
1225577345
13152cc702
14b98843b
157ad2abe
hex53eb425

87995429 has 4 divisors (see below), whose sum is σ = 88032576. Its totient is φ = 87958284.

The previous prime is 87995381. The next prime is 87995437. The reversal of 87995429 is 92459978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87995429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87995629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14759 + ... + 19844.

It is an arithmetic number, because the mean of its divisors is an integer number (22008144).

Almost surely, 287995429 is an apocalyptic number.

It is an amenable number.

87995429 is a deficient number, since it is larger than the sum of its proper divisors (37147).

87995429 is a wasteful number, since it uses less digits than its factorization.

87995429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37146.

The product of its digits is 1632960, while the sum is 53.

The square root of 87995429 is about 9380.5878813644. The cubic root of 87995429 is about 444.7883166070.

The spelling of 87995429 in words is "eighty-seven million, nine hundred ninety-five thousand, four hundred twenty-nine".

Divisors: 1 2543 34603 87995429