109789240 has 32 divisors (see below), whose sum is σ = 269483760. Its totient is φ = 39923200.

The previous prime is 109789187. The next prime is 109789261. The reversal of 109789240 is 42987901.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 109789193 and 109789202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124321 + ... + 125200.

Almost surely, 2^109789240 is an apocalyptic number.

109789240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109789240 is an abundant number, since it is smaller than the sum of its proper divisors (159694520).

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

109789240 is a wasteful number, since it uses less digits than its factorization.

109789240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249543 (or 249539 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 109789240 is about 10478.0360755248. The cubic root of 109789240 is about 478.8357780434.

The spelling of 109789240 in words is "one hundred nine million, seven hundred eighty-nine thousand, two hundred forty".