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87048221 = 138637759
BaseRepresentation
bin1010011000001…
…00000000011101
320001210111201012
411030010000131
5134241020341
612345425005
72104616621
oct514040035
9201714635
1087048221
1145155687
122519b165
131505a530
14b7bd181
1579970eb
hex530401d

87048221 has 8 divisors (see below), whose sum is σ = 93864960. Its totient is φ = 80248752.

The previous prime is 87048197. The next prime is 87048233. The reversal of 87048221 is 12284078.

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

It is a cyclic number.

It is not a de Polignac number, because 87048221 - 226 = 19939357 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 (87048251) 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, 7340 + ... + 15098.

It is an arithmetic number, because the mean of its divisors is an integer number (11733120).

Almost surely, 287048221 is an apocalyptic number.

It is an amenable number.

87048221 is a deficient number, since it is larger than the sum of its proper divisors (6816739).

87048221 is a wasteful number, since it uses less digits than its factorization.

87048221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8635.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 87048221 is about 9329.9636119333. The cubic root of 87048221 is about 443.1866127759.

The spelling of 87048221 in words is "eighty-seven million, forty-eight thousand, two hundred twenty-one".

Divisors: 1 13 863 7759 11219 100867 6696017 87048221