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904690081 = 31109267739
BaseRepresentation
bin110101111011000…
…111100110100001
32100001100000111001
4311323013212201
53323100040311
6225434352001
731263511261
oct6573074641
92301300431
10904690081
11424746059
12212b8b601
13115579399
148821b7a1
15546564c1
hex35ec79a1

904690081 has 8 divisors (see below), whose sum is σ = 942444800. Its totient is φ = 867471120.

The previous prime is 904690057. The next prime is 904690099. The reversal of 904690081 is 180096409.

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 904690081 - 213 = 904681889 is a prime.

It is a super-2 number, since 2×9046900812 = 1636928285319573122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 904690081.

It is not an unprimeable number, because it can be changed into a prime (904690001) 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, 130491 + ... + 137248.

It is an arithmetic number, because the mean of its divisors is an integer number (117805600).

Almost surely, 2904690081 is an apocalyptic number.

It is an amenable number.

904690081 is a deficient number, since it is larger than the sum of its proper divisors (37754719).

904690081 is a wasteful number, since it uses less digits than its factorization.

904690081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267879.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 904690081 is about 30078.0664438391. The cubic root of 904690081 is about 967.1635995258.

The spelling of 904690081 in words is "nine hundred four million, six hundred ninety thousand, eighty-one".

Divisors: 1 31 109 3379 267739 8299909 29183551 904690081