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897290481 = 31717593931
BaseRepresentation
bin110101011110111…
…001000011110001
32022112102002010210
4311132321003301
53314201243411
6225012014333
731143562143
oct6536710361
92275362123
10897290481
1142055168a
122106013a9
13113b88319
1487252c93
1553b93ca6
hex357b90f1

897290481 has 8 divisors (see below), whose sum is σ = 1266763104. Its totient is φ = 563005760.

The previous prime is 897290461. The next prime is 897290483. The reversal of 897290481 is 184092798.

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 897290481 - 29 = 897289969 is a prime.

It is a super-2 number, since 2×8972904812 = 1610260414586422722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 897290481.

It is not an unprimeable number, because it can be changed into a prime (897290483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8796915 + ... + 8797016.

It is an arithmetic number, because the mean of its divisors is an integer number (158345388).

Almost surely, 2897290481 is an apocalyptic number.

It is an amenable number.

897290481 is a deficient number, since it is larger than the sum of its proper divisors (369472623).

897290481 is a wasteful number, since it uses less digits than its factorization.

897290481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17593951.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 897290481 is about 29954.8073103467. The cubic root of 897290481 is about 964.5195173959.

The spelling of 897290481 in words is "eight hundred ninety-seven million, two hundred ninety thousand, four hundred eighty-one".

Divisors: 1 3 17 51 17593931 52781793 299096827 897290481