102178872 has 48 divisors (see below), whose sum is σ = 279494280. Its totient is φ = 33720000.

The previous prime is 102178871. The next prime is 102178877. The reversal of 102178872 is 278871201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102178871) 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, 247 + ... + 14297.

Almost surely, 2^102178872 is an apocalyptic number.

102178872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102178872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139747140).

102178872 is an abundant number, since it is smaller than the sum of its proper divisors (177315408).

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

102178872 is a wasteful number, since it uses less digits than its factorization.

102178872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14164 (or 14157 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 102178872 is about 10108.3565429797. The cubic root of 102178872 is about 467.5058338563.

The spelling of 102178872 in words is "one hundred two million, one hundred seventy-eight thousand, eight hundred seventy-two".