10172320 has 24 divisors (see below), whose sum is σ = 24032484. Its totient is φ = 4068864.

The previous prime is 10172221. The next prime is 10172321. The reversal of 10172320 is 2327101.

It is a happy number.

10172320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9659664 + 512656 = 3108^2 + 716^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 10172294 and 10172303.

It is not an unprimeable number, because it can be changed into a prime (10172321) 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, 31629 + ... + 31948.

Almost surely, 2^10172320 is an apocalyptic number.

10172320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10172320 is an abundant number, since it is smaller than the sum of its proper divisors (13860164).

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

10172320 is an equidigital number, since it uses as much as digits as its factorization.

10172320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63592 (or 63584 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 10172320 is about 3189.4074684806. The cubic root of 10172320 is about 216.6739353249.

Adding to 10172320 its reverse (2327101), we get a palindrome (12499421).

The spelling of 10172320 in words is "ten million, one hundred seventy-two thousand, three hundred twenty".