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87183210140 = 22513335320039
BaseRepresentation
bin101000100110010000…
…1100011011010011100
322100000221120221211222
41101030201203122130
52412022400211030
6104015034432512
76204324026135
oct1211441433234
9270027527758
1087183210140
1133a79716194
1214a91592738
1382b5396b10
144310b86c8c
152403e273e5
hex144c86369c

87183210140 has 24 divisors (see below), whose sum is σ = 197168183520. Its totient is φ = 32190723648.

The previous prime is 87183210131. The next prime is 87183210151. The reversal of 87183210140 is 4101238178.

It is a self number, because there is not a number n which added to its sum of digits gives 87183210140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167659760 + ... + 167660279.

It is an arithmetic number, because the mean of its divisors is an integer number (8215340980).

Almost surely, 287183210140 is an apocalyptic number.

It is an amenable number.

87183210140 is an abundant number, since it is smaller than the sum of its proper divisors (109984973380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87183210140 is a wasteful number, since it uses less digits than its factorization.

87183210140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335320061 (or 335320059 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 87183210140 in words is "eighty-seven billion, one hundred eighty-three million, two hundred ten thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 335320039 670640078 1341280156 1676600195 3353200390 4359160507 6706400780 8718321014 17436642028 21795802535 43591605070 87183210140