109128950 has 48 divisors (see below), whose sum is σ = 245636064. Its totient is φ = 35212800.

The previous prime is 109128931. The next prime is 109128991. The reversal of 109128950 is 59821901.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 109128950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3221 + ... + 15120.

It is an arithmetic number, because the mean of its divisors is an integer number (5117418).

Almost surely, 2^109128950 is an apocalyptic number.

109128950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109128950 is an abundant number, since it is smaller than the sum of its proper divisors (136507114).

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

109128950 is a wasteful number, since it uses less digits than its factorization.

109128950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18377 (or 18372 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 109128950 is about 10446.4802684923. The cubic root of 109128950 is about 477.8739156138.

The spelling of 109128950 in words is "one hundred nine million, one hundred twenty-eight thousand, nine hundred fifty".