103440640 has 72 divisors (see below), whose sum is σ = 249596928. Its totient is φ = 41072640.

The previous prime is 103440619. The next prime is 103440713. The reversal of 103440640 is 46044301.

It is a happy number.

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, 269889 + ... + 270271.

It is an arithmetic number, because the mean of its divisors is an integer number (3466624).

Almost surely, 2^103440640 is an apocalyptic number.

103440640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103440640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124798464).

103440640 is an abundant number, since it is smaller than the sum of its proper divisors (146156288).

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

103440640 is an equidigital number, since it uses as much as digits as its factorization.

103440640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 103440640 is about 10170.5771714294. The cubic root of 103440640 is about 469.4223172647.

Adding to 103440640 its reverse (46044301), we get a palindrome (149484941).

The spelling of 103440640 in words is "one hundred three million, four hundred forty thousand, six hundred forty".