10521284 has 6 divisors (see below), whose sum is σ = 18412254. Its totient is φ = 5260640.

The previous prime is 10521263. The next prime is 10521289. The reversal of 10521284 is 48212501.

It can be written as a sum of positive squares in only one way, i.e., 9746884 + 774400 = 3122^2 + 880^2 .

It is a super-2 number, since 2×10521284² = 221394834017312, which contains 22 as substring.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315157 + ... + 1315164.

It is an arithmetic number, because the mean of its divisors is an integer number (3068709).

Almost surely, 2^10521284 is an apocalyptic number.

It is an amenable number.

10521284 is a deficient number, since it is larger than the sum of its proper divisors (7890970).

10521284 is a wasteful number, since it uses less digits than its factorization.

10521284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630325 (or 2630323 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 10521284 is about 3243.6528790856. The cubic root of 10521284 is about 219.1238153648.

Adding to 10521284 its reverse (48212501), we get a palindrome (58733785).

The spelling of 10521284 in words is "ten million, five hundred twenty-one thousand, two hundred eighty-four".