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214744257740 = 22515768389891
BaseRepresentation
bin1100011111111111000…
…0010101010011001100
3202112021220012120202102
43013333300111103030
512004244012221430
6242352510414232
721341364034115
oct3077760252314
9675256176672
10214744257740
1183088598281
1235751501378
1317333b94c3c
14a57237320c
1558bcabd345
hex31ffc154cc

214744257740 has 24 divisors (see below), whose sum is σ = 453835323312. Its totient is φ = 85350582720.

The previous prime is 214744257683. The next prime is 214744257851. The reversal of 214744257740 is 47752447412.

It is a super-3 number, since 3×2147442577403 (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 34191806 + ... + 34198085.

It is an arithmetic number, because the mean of its divisors is an integer number (18909805138).

Almost surely, 2214744257740 is an apocalyptic number.

214744257740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214744257740 is an abundant number, since it is smaller than the sum of its proper divisors (239091065572).

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

214744257740 is a wasteful number, since it uses less digits than its factorization.

214744257740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68390057 (or 68390055 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 47.

The spelling of 214744257740 in words is "two hundred fourteen billion, seven hundred forty-four million, two hundred fifty-seven thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 157 314 628 785 1570 3140 68389891 136779782 273559564 341949455 683898910 1367797820 10737212887 21474425774 42948851548 53686064435 107372128870 214744257740