103289440 has 48 divisors (see below), whose sum is σ = 249712848. Its totient is φ = 40352256.

The previous prime is 103289429. The next prime is 103289443. The reversal of 103289440 is 44982301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103289443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627 + ... + 14386.

It is an arithmetic number, because the mean of its divisors is an integer number (5202351).

Almost surely, 2^103289440 is an apocalyptic number.

103289440 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 103289440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124856424).

103289440 is an abundant number, since it is smaller than the sum of its proper divisors (146423408).

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

103289440 is a wasteful number, since it uses less digits than its factorization.

103289440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15071 (or 15063 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 103289440 is about 10163.1412466816. The cubic root of 103289440 is about 469.1934862983.

The spelling of 103289440 in words is "one hundred three million, two hundred eighty-nine thousand, four hundred forty".