108378990 has 96 divisors (see below), whose sum is σ = 301444416. Its totient is φ = 26949120.

The previous prime is 108378971. The next prime is 108378997. The reversal of 108378990 is 99873801.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108378997) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84232 + ... + 85508.

It is an arithmetic number, because the mean of its divisors is an integer number (3140046).

Almost surely, 2^108378990 is an apocalyptic number.

108378990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 108378990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150722208).

108378990 is an abundant number, since it is smaller than the sum of its proper divisors (193065426).

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

108378990 is a wasteful number, since it uses less digits than its factorization.

108378990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 108378990 is about 10410.5230416152. The cubic root of 108378990 is about 476.7767107551.

The spelling of 108378990 in words is "one hundred eight million, three hundred seventy-eight thousand, nine hundred ninety".