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19992282757 = 312027318161
BaseRepresentation
bin10010100111101000…
…100000011010000101
31220121022000012011221
4102213220200122011
5311421011022012
613103452000341
71305266412436
oct224750403205
956538005157
1019992282757
11852a138a37
123a5b4600b1
131b67c05115
14d7927748d
157c0244507
hex4a7a20685

19992282757 has 8 divisors (see below), whose sum is σ = 20647441152. Its totient is φ = 19337764800.

The previous prime is 19992282749. The next prime is 19992282833. The reversal of 19992282757 is 75728229991.

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

It is a cyclic number.

It is not a de Polignac number, because 19992282757 - 23 = 19992282749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19992282695 and 19992282704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19992282707) 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, 96244 + ... + 221917.

It is an arithmetic number, because the mean of its divisors is an integer number (2580930144).

Almost surely, 219992282757 is an apocalyptic number.

It is an amenable number.

19992282757 is a deficient number, since it is larger than the sum of its proper divisors (655158395).

19992282757 is a wasteful number, since it uses less digits than its factorization.

19992282757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320219.

The product of its digits is 11430720, while the sum is 61.

The spelling of 19992282757 in words is "nineteen billion, nine hundred ninety-two million, two hundred eighty-two thousand, seven hundred fifty-seven".

Divisors: 1 31 2027 62837 318161 9862991 644912347 19992282757