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87007953 = 3283710223
BaseRepresentation
bin1010010111110…
…10001011010001
320001201110110210
411023322023101
5134233223303
612344514333
72104361334
oct513721321
9201643423
1087007953
11451283aa
122517b9a9
13150450c6
14b7ac61b
15798a203
hex52fa2d1

87007953 has 8 divisors (see below), whose sum is σ = 116062848. Its totient is φ = 57979184.

The previous prime is 87007939. The next prime is 87007957. The reversal of 87007953 is 35970078.

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 87007953 - 24 = 87007937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87007957) 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, 3400 + ... + 13622.

It is an arithmetic number, because the mean of its divisors is an integer number (14507856).

Almost surely, 287007953 is an apocalyptic number.

It is an amenable number.

87007953 is a deficient number, since it is larger than the sum of its proper divisors (29054895).

87007953 is a wasteful number, since it uses less digits than its factorization.

87007953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13063.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 87007953 is about 9327.8053688957. The cubic root of 87007953 is about 443.1182637203.

It can be divided in two parts, 8700 and 7953, that added together give a triangular number (16653 = T182).

The spelling of 87007953 in words is "eighty-seven million, seven thousand, nine hundred fifty-three".

Divisors: 1 3 2837 8511 10223 30669 29002651 87007953