10402240 has 28 divisors (see below), whose sum is σ = 24771096. Its totient is φ = 4160768.

The previous prime is 10402229. The next prime is 10402241. The reversal of 10402240 is 4220401.

10402240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 10402240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402241) 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, 15934 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (884682).

Almost surely, 2^10402240 is an apocalyptic number.

10402240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10402240 is an abundant number, since it is smaller than the sum of its proper divisors (14368856).

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

10402240 is an equidigital number, since it uses as much as digits as its factorization.

10402240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32524 (or 32514 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 10402240 is about 3225.2503778777. The cubic root of 10402240 is about 218.2942467697.

Adding to 10402240 its reverse (4220401), we get a palindrome (14622641).

The spelling of 10402240 in words is "ten million, four hundred two thousand, two hundred forty".