109272820 has 24 divisors (see below), whose sum is σ = 232241184. Its totient is φ = 43181856.

The previous prime is 109272797. The next prime is 109272829. The reversal of 109272820 is 28272901.

109272820 = T₁₅₈₁ + T₁₅₈₂ + ... + T₁₆₆₃.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109272829) 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, 31254 + ... + 34573.

It is an arithmetic number, because the mean of its divisors is an integer number (9676716).

Almost surely, 2^109272820 is an apocalyptic number.

109272820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109272820 is an abundant number, since it is smaller than the sum of its proper divisors (122968364).

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

109272820 is a wasteful number, since it uses less digits than its factorization.

109272820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65919 (or 65917 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 109272820 is about 10453.3640518256. The cubic root of 109272820 is about 478.0838248678.

The spelling of 109272820 in words is "one hundred nine million, two hundred seventy-two thousand, eight hundred twenty".