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10220623 = 71460089
BaseRepresentation
bin100110111111…
…010001001111
3201020021001121
4212333101033
510104024443
61003021411
7152605510
oct46772117
921207047
1010220623
1158509a6
12350a867
13216b10a
141500a07
15d6d4ed
hex9bf44f

10220623 has 4 divisors (see below), whose sum is σ = 11680720. Its totient is φ = 8760528.

The previous prime is 10220597. The next prime is 10220647. The reversal of 10220623 is 32602201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32602201 = 231417487.

It is not a de Polignac number, because 10220623 - 25 = 10220591 is a prime.

It is a super-2 number, since 2×102206232 = 208922269016258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220597 and 10220606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220653) 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, 730038 + ... + 730051.

It is an arithmetic number, because the mean of its divisors is an integer number (2920180).

Almost surely, 210220623 is an apocalyptic number.

10220623 is a deficient number, since it is larger than the sum of its proper divisors (1460097).

10220623 is an equidigital number, since it uses as much as digits as its factorization.

10220623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460096.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 10220623 is about 3196.9709100960. The cubic root of 10220623 is about 217.0163507822.

Adding to 10220623 its reverse (32602201), we get a palindrome (42822824).

The spelling of 10220623 in words is "ten million, two hundred twenty thousand, six hundred twenty-three".

Divisors: 1 7 1460089 10220623