109280840 has 16 divisors (see below), whose sum is σ = 245881980. Its totient is φ = 43712320.

The previous prime is 109280791. The next prime is 109280851. The reversal of 109280840 is 48082901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108284836 + 996004 = 10406^2 + 998^2 .

It is a super-2 number, since 2×109280840² = 23884603982211200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109280797 and 109280806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365971 + ... + 1366050.

Almost surely, 2^109280840 is an apocalyptic number.

109280840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109280840 is an abundant number, since it is smaller than the sum of its proper divisors (136601140).

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

109280840 is a wasteful number, since it uses less digits than its factorization.

109280840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732032 (or 2732028 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 109280840 is about 10453.7476533538. The cubic root of 109280840 is about 478.0955207877.

The spelling of 109280840 in words is "one hundred nine million, two hundred eighty thousand, eight hundred forty".