103240440 has 128 divisors (see below), whose sum is σ = 347688000. Its totient is φ = 27247104.

The previous prime is 103240429. The next prime is 103240477. The reversal of 103240440 is 44042301.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117282 + ... + 118158.

Almost surely, 2^103240440 is an apocalyptic number.

103240440 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 103240440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173844000).

103240440 is an abundant number, since it is smaller than the sum of its proper divisors (244447560).

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

103240440 is a wasteful number, since it uses less digits than its factorization.

103240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 103240440 is about 10160.7302887145. The cubic root of 103240440 is about 469.1192802055.

Adding to 103240440 its reverse (44042301), we get a palindrome (147282741).

The spelling of 103240440 in words is "one hundred three million, two hundred forty thousand, four hundred forty".