108621280 has 24 divisors (see below), whose sum is σ = 256618152. Its totient is φ = 43448448.

The previous prime is 108621229. The next prime is 108621283. The reversal of 108621280 is 82126801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108621283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339282 + ... + 339601.

It is an arithmetic number, because the mean of its divisors is an integer number (10692423).

Almost surely, 2^108621280 is an apocalyptic number.

108621280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108621280 is an abundant number, since it is smaller than the sum of its proper divisors (147996872).

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

108621280 is an equidigital number, since it uses as much as digits as its factorization.

108621280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678898 (or 678890 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 108621280 is about 10422.1533283674. The cubic root of 108621280 is about 477.1317372923.

It can be divided in two parts, 1086 and 21280, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 108621280 in words is "one hundred eight million, six hundred twenty-one thousand, two hundred eighty".