10521400 has 48 divisors (see below), whose sum is σ = 25266240. Its totient is φ = 4070400.

The previous prime is 10521377. The next prime is 10521437. The reversal of 10521400 is 412501.

It is a super-2 number, since 2×10521400² = 221399715920000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5352 + ... + 7048.

It is an arithmetic number, because the mean of its divisors is an integer number (526380).

Almost surely, 2^10521400 is an apocalyptic number.

10521400 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 10521400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12633120).

10521400 is an abundant number, since it is smaller than the sum of its proper divisors (14744840).

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

10521400 is a wasteful number, since it uses less digits than its factorization.

10521400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10521400 is about 3243.6707601111. The cubic root of 10521400 is about 219.1246206616.

Adding to 10521400 its reverse (412501), we get a palindrome (10933901).

The spelling of 10521400 in words is "ten million, five hundred twenty-one thousand, four hundred".