10248821 has 6 divisors (see below), whose sum is σ = 11265366. Its totient is φ = 9317000.

The previous prime is 10248767. The next prime is 10248827. The reversal of 10248821 is 12884201.

10248821 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 only one way, i.e., 7562500 + 2686321 = 2750^2 + 1639^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10248821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10248827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42230 + ... + 42471.

It is an arithmetic number, because the mean of its divisors is an integer number (1877561).

Almost surely, 2^10248821 is an apocalyptic number.

10248821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10248821 is a deficient number, since it is larger than the sum of its proper divisors (1016545).

10248821 is an equidigital number, since it uses as much as digits as its factorization.

10248821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84723 (or 84712 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 10248821 is about 3201.3779845560. The cubic root of 10248821 is about 217.2157452802.

The spelling of 10248821 in words is "ten million, two hundred forty-eight thousand, eight hundred twenty-one".