102303440 has 40 divisors (see below), whose sum is σ = 238318080. Its totient is φ = 40841856.

The previous prime is 102303437. The next prime is 102303451. The reversal of 102303440 is 44303201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 57281 + ... + 59039.

It is an arithmetic number, because the mean of its divisors is an integer number (5957952).

Almost surely, 2^102303440 is an apocalyptic number.

102303440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102303440 is an abundant number, since it is smaller than the sum of its proper divisors (136014640).

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

102303440 is a wasteful number, since it uses less digits than its factorization.

102303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 102303440 is about 10114.5163008421. The cubic root of 102303440 is about 467.6957381421.

Adding to 102303440 its reverse (44303201), we get a palindrome (146606641).

The spelling of 102303440 in words is "one hundred two million, three hundred three thousand, four hundred forty".