102328444438 has 128 divisors (see below), whose sum is σ = 185980354560. Its totient is φ = 41713056000.

The previous prime is 102328444433. The next prime is 102328444483. The reversal of 102328444438 is 834444823201.

It is a happy number.

It is a super-2 number, since 2×102328444438² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 102328444394 and 102328444403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102328444433) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140754031 + ... + 140754757.

It is an arithmetic number, because the mean of its divisors is an integer number (1452971520).

Almost surely, 2^102328444438 is an apocalyptic number.

102328444438 is a deficient number, since it is larger than the sum of its proper divisors (83651910122).

102328444438 is a wasteful number, since it uses less digits than its factorization.

102328444438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 589824, while the sum is 43.

The spelling of 102328444438 in words is "one hundred two billion, three hundred twenty-eight million, four hundred forty-four thousand, four hundred thirty-eight".