102045678 has 64 divisors (see below), whose sum is σ = 239887872. Its totient is φ = 28339200.

The previous prime is 102045677. The next prime is 102045689. The reversal of 102045678 is 876540201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102045677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254278 + ... + 254678.

It is an arithmetic number, because the mean of its divisors is an integer number (3748248).

Almost surely, 2^102045678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102045678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119943936).

102045678 is an abundant number, since it is smaller than the sum of its proper divisors (137842194).

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

102045678 is a wasteful number, since it uses less digits than its factorization.

102045678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 102045678 is about 10101.7660832154. The cubic root of 102045678 is about 467.3026083849.

Adding to 102045678 its reverse (876540201), we get a palindrome (978585879).

The spelling of 102045678 in words is "one hundred two million, forty-five thousand, six hundred seventy-eight".