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9028992061 = 891011004449
BaseRepresentation
bin10000110100010101…
…10111110000111101
3212022020122022122101
420122022313300331
5121442410221221
64051534345101
7436514111005
oct103212676075
925266568571
109028992061
1139136a3411
1218bb95b191
13b0b79156b
14619201005
1537ca06d91
hex21a2b7c3d

9028992061 has 8 divisors (see below), whose sum is σ = 9220851000. Its totient is φ = 8839142400.

The previous prime is 9028992053. The next prime is 9028992083. The reversal of 9028992061 is 1602998209.

It can be written as a sum of positive squares in 4 ways, for example, as 3560389561 + 5468602500 = 59669^2 + 73950^2 .

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 9028992061 - 23 = 9028992053 is a prime.

It is a super-4 number, since 4×90289920614 (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9028932061) 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, 493236 + ... + 511213.

It is an arithmetic number, because the mean of its divisors is an integer number (1152606375).

Almost surely, 29028992061 is an apocalyptic number.

It is an amenable number.

9028992061 is a deficient number, since it is larger than the sum of its proper divisors (191858939).

9028992061 is a wasteful number, since it uses less digits than its factorization.

9028992061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004639.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 9028992061 is about 95021.0085244311. The cubic root of 9028992061 is about 2082.3149814754.

The spelling of 9028992061 in words is "nine billion, twenty-eight million, nine hundred ninety-two thousand, sixty-one".

Divisors: 1 89 101 8989 1004449 89395961 101449349 9028992061