109609780 has 48 divisors (see below), whose sum is σ = 263894400. Its totient is φ = 37461888.

The previous prime is 109609771. The next prime is 109609793. The reversal of 109609780 is 87906901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51171 + ... + 53269.

It is an arithmetic number, because the mean of its divisors is an integer number (5497800).

Almost surely, 2^109609780 is an apocalyptic number.

109609780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109609780 is an abundant number, since it is smaller than the sum of its proper divisors (154284620).

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

109609780 is a wasteful number, since it uses less digits than its factorization.

109609780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 109609780 is about 10469.4689454623. The cubic root of 109609780 is about 478.5747362743.

The spelling of 109609780 in words is "one hundred nine million, six hundred nine thousand, seven hundred eighty".