102307540 has 24 divisors (see below), whose sum is σ = 216139392. Its totient is φ = 40676640.

The previous prime is 102307511. The next prime is 102307561. The reversal of 102307540 is 45703201.

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, 11976 + ... + 18655.

It is an arithmetic number, because the mean of its divisors is an integer number (9005808).

Almost surely, 2^102307540 is an apocalyptic number.

102307540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102307540 is an abundant number, since it is smaller than the sum of its proper divisors (113831852).

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

102307540 is a wasteful number, since it uses less digits than its factorization.

102307540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30807 (or 30805 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 102307540 is about 10114.7189778066. The cubic root of 102307540 is about 467.7019859832.

The spelling of 102307540 in words is "one hundred two million, three hundred seven thousand, five hundred forty".