10521280 has 168 divisors, whose sum is σ = 32314896. Its totient is φ = 3225600.

The previous prime is 10521263. The next prime is 10521289. The reversal of 10521280 is 8212501.

It is a super-2 number, since 2×10521280² = 221394665676800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172450 + ... + 172510.

Almost surely, 2^10521280 is an apocalyptic number.

10521280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10521280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16157448).

10521280 is an abundant number, since it is smaller than the sum of its proper divisors (21793616).

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

10521280 is a wasteful number, since it uses less digits than its factorization.

10521280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 10521280 is about 3243.6522624967. The cubic root of 10521280 is about 219.1237875958.

Adding to 10521280 its reverse (8212501), we get a palindrome (18733781).

It can be divided in two parts, 10521 and 280, that added together give a palindrome (10801).

The spelling of 10521280 in words is "ten million, five hundred twenty-one thousand, two hundred eighty".