109385780 has 24 divisors (see below), whose sum is σ = 262526208. Its totient is φ = 37503648.

The previous prime is 109385777. The next prime is 109385789. The reversal of 109385780 is 87583901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109385789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390524 + ... + 390803.

It is an arithmetic number, because the mean of its divisors is an integer number (10938592).

Almost surely, 2^109385780 is an apocalyptic number.

109385780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109385780 is an abundant number, since it is smaller than the sum of its proper divisors (153140428).

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

109385780 is a wasteful number, since it uses less digits than its factorization.

109385780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781343 (or 781341 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 109385780 is about 10458.7657015539. The cubic root of 109385780 is about 478.2485067184.

The spelling of 109385780 in words is "one hundred nine million, three hundred eighty-five thousand, seven hundred eighty".