109784120628 has 384 divisors, whose sum is σ = 358286745600. Its totient is φ = 25329604608.

The previous prime is 109784120623. The next prime is 109784120711. The reversal of 109784120628 is 826021487901.

It is a happy number.

It is a super-2 number, since 2×109784120628² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109784120623) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13834950 + ... + 13842882.

It is an arithmetic number, because the mean of its divisors is an integer number (933038400).

Almost surely, 2^109784120628 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 109784120628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179143372800).

109784120628 is an abundant number, since it is smaller than the sum of its proper divisors (248502624972).

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

109784120628 is a wasteful number, since it uses less digits than its factorization.

109784120628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8031 (or 8029 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 109784120628 in words is "one hundred nine billion, seven hundred eighty-four million, one hundred twenty thousand, six hundred twenty-eight".