102168428 has 6 divisors (see below), whose sum is σ = 178794756. Its totient is φ = 51084212.

The previous prime is 102168427. The next prime is 102168431. The reversal of 102168428 is 824861201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102168394 and 102168403.

It is not an unprimeable number, because it can be changed into a prime (102168427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771050 + ... + 12771057.

It is an arithmetic number, because the mean of its divisors is an integer number (29799126).

Almost surely, 2^102168428 is an apocalyptic number.

It is an amenable number.

102168428 is a deficient number, since it is larger than the sum of its proper divisors (76626328).

102168428 is a wasteful number, since it uses less digits than its factorization.

102168428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25542111 (or 25542109 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 102168428 is about 10107.8399275018. The cubic root of 102168428 is about 467.4899049361.

The spelling of 102168428 in words is "one hundred two million, one hundred sixty-eight thousand, four hundred twenty-eight".