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87200457 = 331919109
BaseRepresentation
bin1010011001010…
…01001011001001
320002002020112120
411030221023021
5134310403312
612353001453
72106122511
oct514511311
9202066476
1087200457
1145249aa3
1225253289
13150b1906
14b81c841
1579c728c
hex53292c9

87200457 has 8 divisors (see below), whose sum is σ = 116316480. Its totient is φ = 58109040.

The previous prime is 87200441. The next prime is 87200459. The reversal of 87200457 is 75400278.

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

It is not a de Polignac number, because 87200457 - 24 = 87200441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87200459) 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, 5019 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (14539560).

Almost surely, 287200457 is an apocalyptic number.

It is an amenable number.

87200457 is a deficient number, since it is larger than the sum of its proper divisors (29116023).

87200457 is a wasteful number, since it uses less digits than its factorization.

87200457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 87200457 is about 9338.1184935725. The cubic root of 87200457 is about 443.4448208630. Note that the first 3 decimals are identical.

The spelling of 87200457 in words is "eighty-seven million, two hundred thousand, four hundred fifty-seven".

Divisors: 1 3 3191 9109 9573 27327 29066819 87200457