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10323220 = 225516161
BaseRepresentation
bin100111011000…
…010100010100
3201102110210111
4213120110110
510120320340
61005132404
7153513565
oct47302424
921373714
1010323220
115910a96
12355a104
1321a5a1b
14152a16c
15d8daea
hex9d8514

10323220 has 12 divisors (see below), whose sum is σ = 21678804. Its totient is φ = 4129280.

The previous prime is 10323211. The next prime is 10323223. The reversal of 10323220 is 2232301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1726596 + 8596624 = 1314^2 + 2932^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10323220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10323223) 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, 258061 + ... + 258100.

It is an arithmetic number, because the mean of its divisors is an integer number (1806567).

Almost surely, 210323220 is an apocalyptic number.

10323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10323220 is an abundant number, since it is smaller than the sum of its proper divisors (11355584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10323220 is a wasteful number, since it uses less digits than its factorization.

10323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516170 (or 516168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 10323220 is about 3212.9768128637. The cubic root of 10323220 is about 217.7400880755.

Adding to 10323220 its reverse (2232301), we get a palindrome (12555521).

The spelling of 10323220 in words is "ten million, three hundred twenty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 516161 1032322 2064644 2580805 5161610 10323220