102445728 has 96 divisors (see below), whose sum is σ = 335301120. Its totient is φ = 26607360.

The previous prime is 102445697. The next prime is 102445787. The reversal of 102445728 is 827544201.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463 + ... + 14321.

It is an arithmetic number, because the mean of its divisors is an integer number (3492720).

Almost surely, 2^102445728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102445728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167650560).

102445728 is an abundant number, since it is smaller than the sum of its proper divisors (232855392).

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

102445728 is a wasteful number, since it uses less digits than its factorization.

102445728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13890 (or 13882 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 102445728 is about 10121.5477077372. The cubic root of 102445728 is about 467.9124681062.

Adding to 102445728 its reverse (827544201), we get a palindrome (929989929).

The spelling of 102445728 in words is "one hundred two million, four hundred forty-five thousand, seven hundred twenty-eight".