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57740297982 = 2329615440013
BaseRepresentation
bin110101110001100101…
…110000011011111110
312112001000120001022220
4311301211300123332
51421223004013412
642305302550210
74112600302113
oct656145603376
9175030501286
1057740297982
112253a990534
12b235138366
1355a25543c3
142b1a71490a
15177e19168c
hexd719706fe

57740297982 has 32 divisors (see below), whose sum is σ = 121421112480. Its totient is φ = 18278440320.

The previous prime is 57740297959. The next prime is 57740297987. The reversal of 57740297982 is 28979204775.

It is a super-2 number, since 2×577402979822 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57740297987) 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, 2709393 + ... + 2730620.

It is an arithmetic number, because the mean of its divisors is an integer number (3794409765).

Almost surely, 257740297982 is an apocalyptic number.

57740297982 is an abundant number, since it is smaller than the sum of its proper divisors (63680814498).

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

57740297982 is a wasteful number, since it uses less digits than its factorization.

57740297982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440108.

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 57740297982 in words is "fifty-seven billion, seven hundred forty million, two hundred ninety-seven thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 29 58 61 87 122 174 183 366 1769 3538 5307 10614 5440013 10880026 16320039 32640078 157760377 315520754 331840793 473281131 663681586 946562262 995522379 1991044758 9623382997 19246765994 28870148991 57740297982