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57810893 = 747199883
BaseRepresentation
bin1101110010000…
…1111111001101
311000210002122012
43130201333031
5104244422033
65423031005
71301245610
oct334417715
9130702565
1057810893
112a6a61a8
121743b465
13bc9173a
14796c177
15511e248
hex3721fcd

57810893 has 16 divisors (see below), whose sum is σ = 67891200. Its totient is φ = 48199536.

The previous prime is 57810889. The next prime is 57810899. The reversal of 57810893 is 39801875.

It is a happy number.

It is not a de Polignac number, because 57810893 - 22 = 57810889 is a prime.

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 57810893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57810899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65030 + ... + 65912.

It is an arithmetic number, because the mean of its divisors is an integer number (4243200).

Almost surely, 257810893 is an apocalyptic number.

It is an amenable number.

57810893 is a deficient number, since it is larger than the sum of its proper divisors (10080307).

57810893 is a wasteful number, since it uses less digits than its factorization.

57810893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 57810893 is about 7603.3474864694. The cubic root of 57810893 is about 386.6665106850. Note that the first 3 decimals are identical.

The spelling of 57810893 in words is "fifty-seven million, eight hundred ten thousand, eight hundred ninety-three".

Divisors: 1 7 47 199 329 883 1393 6181 9353 41501 65471 175717 290507 1230019 8258699 57810893