102178340 has 24 divisors (see below), whose sum is σ = 234081792. Its totient is φ = 37155680.

The previous prime is 102178291. The next prime is 102178357. The reversal of 102178340 is 43871201.

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, 232004 + ... + 232443.

It is an arithmetic number, because the mean of its divisors is an integer number (9753408).

Almost surely, 2^102178340 is an apocalyptic number.

102178340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102178340 is an abundant number, since it is smaller than the sum of its proper divisors (131903452).

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

102178340 is a wasteful number, since it uses less digits than its factorization.

102178340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464467 (or 464465 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 102178340 is about 10108.3302280842. The cubic root of 102178340 is about 467.5050224898.

The spelling of 102178340 in words is "one hundred two million, one hundred seventy-eight thousand, three hundred forty".