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197046481 = 1731138997
BaseRepresentation
bin10111011111010…
…11000011010001
3111201202222221211
423233223003101
5400420441411
631315220121
74611603352
oct1357530321
9451688854
10197046481
11a1255a35
1255ba7641
1331a91b68
141c253d29
1512474221
hexbbeb0d1

197046481 has 4 divisors (see below), whose sum is σ = 198185652. Its totient is φ = 195907312.

The previous prime is 197046457. The next prime is 197046517. The reversal of 197046481 is 184640791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116208400 + 80838081 = 10780^2 + 8991^2 .

It is a cyclic number.

It is not a de Polignac number, because 197046481 - 29 = 197045969 is a prime.

It is a super-3 number, since 3×1970464813 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197046281) 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, 569326 + ... + 569671.

It is an arithmetic number, because the mean of its divisors is an integer number (49546413).

Almost surely, 2197046481 is an apocalyptic number.

It is an amenable number.

197046481 is a deficient number, since it is larger than the sum of its proper divisors (1139171).

197046481 is a wasteful number, since it uses less digits than its factorization.

197046481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139170.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 197046481 is about 14037.3245670249. The cubic root of 197046481 is about 581.9105456843.

The spelling of 197046481 in words is "one hundred ninety-seven million, forty-six thousand, four hundred eighty-one".

Divisors: 1 173 1138997 197046481