103299440 has 80 divisors (see below), whose sum is σ = 258840576. Its totient is φ = 38227200.

The previous prime is 103299433. The next prime is 103299499. The reversal of 103299440 is 44992301.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 103299397 and 103299406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56135 + ... + 57945.

Almost surely, 2^103299440 is an apocalyptic number.

103299440 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 103299440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129420288).

103299440 is an abundant number, since it is smaller than the sum of its proper divisors (155541136).

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

103299440 is a wasteful number, since it uses less digits than its factorization.

103299440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 103299440 is about 10163.6332086513. The cubic root of 103299440 is about 469.2086275152.

The spelling of 103299440 in words is "one hundred three million, two hundred ninety-nine thousand, four hundred forty".