109782855 has 192 divisors, whose sum is σ = 264176640. Its totient is φ = 40808448.

The previous prime is 109782853. The next prime is 109782857. The reversal of 109782855 is 558287901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (109782853) and next prime (109782857).

It is not a de Polignac number, because 109782855 - 2¹ = 109782853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 109782855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109782851) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1322644 + ... + 1322726.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^109782855 is an apocalyptic number.

109782855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109782855 is an abundant number, since it is smaller than the sum of its proper divisors (154393785).

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

109782855 is a wasteful number, since it uses less digits than its factorization.

109782855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 109782855 is about 10477.7313861351. The cubic root of 109782855 is about 478.8264953314.

The spelling of 109782855 in words is "one hundred nine million, seven hundred eighty-two thousand, eight hundred fifty-five".