Search a number
-
+
1980754282 = 21376182857
BaseRepresentation
bin111011000001111…
…1110100101101010
312010001010202001201
41312003332211222
513024033114112
6524314234414
7100041063553
oct16603764552
95101122051
101980754282
119270a2011
12473425a0a
13257499370
1414b0c932a
15b8d60257
hex760fe96a

1980754282 has 8 divisors (see below), whose sum is σ = 3199680036. Its totient is φ = 914194272.

The previous prime is 1980754277. The next prime is 1980754283. The reversal of 1980754282 is 2824570891.

It can be written as a sum of positive squares in 2 ways, for example, as 1641789361 + 338964921 = 40519^2 + 18411^2 .

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

It is a super-2 number, since 2×19807542822 = 7846775051322671048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1980754283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38091403 + ... + 38091454.

Almost surely, 21980754282 is an apocalyptic number.

1980754282 is a deficient number, since it is larger than the sum of its proper divisors (1218925754).

1980754282 is a wasteful number, since it uses less digits than its factorization.

1980754282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76182872.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 1980754282 is about 44505.6657292080. The cubic root of 1980754282 is about 1255.8666695020.

The spelling of 1980754282 in words is "one billion, nine hundred eighty million, seven hundred fifty-four thousand, two hundred eighty-two".

Divisors: 1 2 13 26 76182857 152365714 990377141 1980754282