108561390 has 32 divisors (see below), whose sum is σ = 297768960. Its totient is φ = 24813984.

The previous prime is 108561389. The next prime is 108561391. The reversal of 108561390 is 93165801.

It is an interprime number because it is at equal distance from previous prime (108561389) and next prime (108561391).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108561391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258270 + ... + 258689.

It is an arithmetic number, because the mean of its divisors is an integer number (9305280).

Almost surely, 2^108561390 is an apocalyptic number.

108561390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108561390 is an abundant number, since it is smaller than the sum of its proper divisors (189207570).

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

108561390 is a wasteful number, since it uses less digits than its factorization.

108561390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516976.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 108561390 is about 10419.2797255856. The cubic root of 108561390 is about 477.0440298830.

It can be divided in two parts, 10856 and 1390, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 108561390 in words is "one hundred eight million, five hundred sixty-one thousand, three hundred ninety".