102381660 has 36 divisors (see below), whose sum is σ = 310558248. Its totient is φ = 27301728.

The previous prime is 102381659. The next prime is 102381661. The reversal of 102381660 is 66183201.

It is an interprime number because it is at equal distance from previous prime (102381659) and next prime (102381661).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102381661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284214 + ... + 284573.

It is an arithmetic number, because the mean of its divisors is an integer number (8626618).

Almost surely, 2^102381660 is an apocalyptic number.

102381660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102381660 is an abundant number, since it is smaller than the sum of its proper divisors (208176588).

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

102381660 is a wasteful number, since it uses less digits than its factorization.

102381660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568802 (or 568797 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 102381660 is about 10118.3822817682. The cubic root of 102381660 is about 467.8149059853.

It can be divided in two parts, 102381 and 660, that added together give a square (103041 = 321²).

The spelling of 102381660 in words is "one hundred two million, three hundred eighty-one thousand, six hundred sixty".