102807440 has 40 divisors (see below), whose sum is σ = 242067840. Its totient is φ = 40599936.

The previous prime is 102807437. The next prime is 102807491. The reversal of 102807440 is 44708201.

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

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 7 ways as a sum of consecutive naturals, for example, 1814 + ... + 14453.

It is an arithmetic number, because the mean of its divisors is an integer number (6051696).

Almost surely, 2^102807440 is an apocalyptic number.

102807440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102807440 is an abundant number, since it is smaller than the sum of its proper divisors (139260400).

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

102807440 is a wasteful number, since it uses less digits than its factorization.

102807440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16359 (or 16353 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 102807440 is about 10139.4003767481. The cubic root of 102807440 is about 468.4625178876.

The spelling of 102807440 in words is "one hundred two million, eight hundred seven thousand, four hundred forty".