102428 has 12 divisors (see below), whose sum is σ = 185640. Its totient is φ = 49392.

The previous prime is 102409. The next prime is 102433. The reversal of 102428 is 824201.

102428 is nontrivially palindromic in base 6.

It is a congruent number.

It is an unprimeable number.

102428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (15470).

2¹⁰²⁴²⁸ is an apocalyptic number.

It is an amenable number.

102428 is a deficient number, since it is larger than the sum of its proper divisors (83212).

102428 is a wasteful number, since it uses less digits than its factorization.

102428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 102428 is about 320.0437470097. The cubic root of 102428 is about 46.7885476153.

Adding to 102428 its reverse (824201), we get a palindrome (926629).

The spelling of 102428 in words is "one hundred two thousand, four hundred twenty-eight".