109092978 has 48 divisors (see below), whose sum is σ = 256123296. Its totient is φ = 33425280.

The previous prime is 109092967. The next prime is 109093013. The reversal of 109092978 is 879290901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9013 + ... + 17303.

It is an arithmetic number, because the mean of its divisors is an integer number (5335902).

Almost surely, 2^109092978 is an apocalyptic number.

109092978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109092978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128061648).

109092978 is an abundant number, since it is smaller than the sum of its proper divisors (147030318).

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

109092978 is a wasteful number, since it uses less digits than its factorization.

109092978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359 (or 8356 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 109092978 is about 10444.7583983547. The cubic root of 109092978 is about 477.8214029071.

The spelling of 109092978 in words is "one hundred nine million, ninety-two thousand, nine hundred seventy-eight".