109128372 has 24 divisors (see below), whose sum is σ = 269611776. Its totient is φ = 34236288.

The previous prime is 109128361. The next prime is 109128413. The reversal of 109128372 is 273821901.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 267268 + ... + 267675.

It is an arithmetic number, because the mean of its divisors is an integer number (11233824).

Almost surely, 2^109128372 is an apocalyptic number.

109128372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

109128372 is an abundant number, since it is smaller than the sum of its proper divisors (160483404).

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

109128372 is a wasteful number, since it uses less digits than its factorization.

109128372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534967 (or 534965 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 109128372 is about 10446.4526036354. The cubic root of 109128372 is about 477.8730719281.

The spelling of 109128372 in words is "one hundred nine million, one hundred twenty-eight thousand, three hundred seventy-two".