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88002431 = 118000221
BaseRepresentation
bin1010011111011…
…00111101111111
320010120222122022
411033230331333
5140012034211
612422110355
72116002566
oct517547577
9203528568
1088002431
1145747590
122557b3bb
131530295a
14b98abdd
157ad4bdb
hex53ecf7f

88002431 has 4 divisors (see below), whose sum is σ = 96002664. Its totient is φ = 80002200.

The previous prime is 88002427. The next prime is 88002451. The reversal of 88002431 is 13420088.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88002431 - 22 = 88002427 is a prime.

It is a super-2 number, since 2×880024312 = 15488855723819522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88002431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88002401) 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, 4000100 + ... + 4000121.

It is an arithmetic number, because the mean of its divisors is an integer number (24000666).

Almost surely, 288002431 is an apocalyptic number.

88002431 is a deficient number, since it is larger than the sum of its proper divisors (8000233).

88002431 is a wasteful number, since it uses less digits than its factorization.

88002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000232.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 88002431 is about 9380.9610914874. The cubic root of 88002431 is about 444.8001139061.

The spelling of 88002431 in words is "eighty-eight million, two thousand, four hundred thirty-one".

Divisors: 1 11 8000221 88002431