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10292021 = 17605413
BaseRepresentation
bin100111010000…
…101100110101
3201100212222222
4213100230311
510113321041
61004332125
7153323615
oct47205465
921325888
1010292021
11589a603
123544045
13219476c
14151ca45
15d8474b
hex9d0b35

10292021 has 4 divisors (see below), whose sum is σ = 10897452. Its totient is φ = 9686592.

The previous prime is 10292003. The next prime is 10292033. The reversal of 10292021 is 12029201.

10292021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12029201 = 101119101.

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 7102225 = 1786^2 + 2665^2 .

It is a cyclic number.

It is not a de Polignac number, because 10292021 - 222 = 6097717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 605413 = 10292021 / (1 + 0 + 2 + 9 + 2 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10292221) 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, 302690 + ... + 302723.

It is an arithmetic number, because the mean of its divisors is an integer number (2724363).

Almost surely, 210292021 is an apocalyptic number.

It is an amenable number.

10292021 is a deficient number, since it is larger than the sum of its proper divisors (605431).

10292021 is an equidigital number, since it uses as much as digits as its factorization.

10292021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605430.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 10292021 is about 3208.1179841147. The cubic root of 10292021 is about 217.5205142055.

The spelling of 10292021 in words is "ten million, two hundred ninety-two thousand, twenty-one".

Divisors: 1 17 605413 10292021