10390440 has 32 divisors (see below), whose sum is σ = 31171680. Its totient is φ = 2770752.

The previous prime is 10390423. The next prime is 10390459. The reversal of 10390440 is 4409301.

10390440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10390440² = 215922486787200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43174 + ... + 43413.

It is an arithmetic number, because the mean of its divisors is an integer number (974115).

Almost surely, 2^10390440 is an apocalyptic number.

10390440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10390440 is an abundant number, since it is smaller than the sum of its proper divisors (20781240).

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

10390440 is a wasteful number, since it uses less digits than its factorization.

10390440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86601 (or 86597 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 10390440 is about 3223.4205434600. The cubic root of 10390440 is about 218.2116733135.

Adding to 10390440 its reverse (4409301), we get a palindrome (14799741).

The spelling of 10390440 in words is "ten million, three hundred ninety thousand, four hundred forty".