10321440 has 48 divisors (see below), whose sum is σ = 32514048. Its totient is φ = 2752256.

The previous prime is 10321439. The next prime is 10321471. The reversal of 10321440 is 4412301.

10321440 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 10272 + ... + 11231.

It is an arithmetic number, because the mean of its divisors is an integer number (677376).

Almost surely, 2^10321440 is an apocalyptic number.

10321440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10321440 is an abundant number, since it is smaller than the sum of its proper divisors (22192608).

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

10321440 is a wasteful number, since it uses less digits than its factorization.

10321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21521 (or 21513 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 10321440 is about 3212.6997992343. The cubic root of 10321440 is about 217.7275726125.

Adding to 10321440 its reverse (4412301), we get a palindrome (14733741).

The spelling of 10321440 in words is "ten million, three hundred twenty-one thousand, four hundred forty".