108778420 has 48 divisors (see below), whose sum is σ = 248774400. Its totient is φ = 39795840.

The previous prime is 108778399. The next prime is 108778429. The reversal of 108778420 is 24877801.

It is a self number, because there is not a number n which added to its sum of digits gives 108778420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108778429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6085 + ... + 15955.

It is an arithmetic number, because the mean of its divisors is an integer number (5182800).

Almost surely, 2^108778420 is an apocalyptic number.

108778420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108778420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124387200).

108778420 is an abundant number, since it is smaller than the sum of its proper divisors (139995980).

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

108778420 is a wasteful number, since it uses less digits than its factorization.

108778420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9928 (or 9926 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 108778420 is about 10429.6893529961. The cubic root of 108778420 is about 477.3617117338.

It can be divided in two parts, 1087 and 78420, that added together give a cube (79507 = 43³).

The spelling of 108778420 in words is "one hundred eight million, seven hundred seventy-eight thousand, four hundred twenty".