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10902081 = 33634027
BaseRepresentation
bin101001100101…
…101001000001
3202111212211210
4221211221001
510242331311
61025400333
7161444331
oct51455101
922455753
1010902081
116176993
1237990a9
132349348
14163b0c1
15e553a6
hexa65a41

10902081 has 4 divisors (see below), whose sum is σ = 14536112. Its totient is φ = 7268052.

The previous prime is 10902077. The next prime is 10902107. The reversal of 10902081 is 18020901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10902081 - 22 = 10902077 is a prime.

It is a super-2 number, since 2×109020812 = 237710740261122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10902011) 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, 1817011 + ... + 1817016.

It is an arithmetic number, because the mean of its divisors is an integer number (3634028).

Almost surely, 210902081 is an apocalyptic number.

It is an amenable number.

10902081 is a deficient number, since it is larger than the sum of its proper divisors (3634031).

10902081 is an equidigital number, since it uses as much as digits as its factorization.

10902081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634030.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 10902081 is about 3301.8299471657. The cubic root of 10902081 is about 221.7361323985.

Adding to 10902081 its reverse (18020901), we get a palindrome (28922982).

The spelling of 10902081 in words is "ten million, nine hundred two thousand, eighty-one".

Divisors: 1 3 3634027 10902081