108992538 has 24 divisors (see below), whose sum is σ = 246418848. Its totient is φ = 34751112.

The previous prime is 108992509. The next prime is 108992551. The reversal of 108992538 is 835299801.

It is a happy number.

108992538 is a `hidden beast` number, since 108 + 9 + 9 + 2 + 538 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 108992493 and 108992502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131220 + ... + 132047.

It is an arithmetic number, because the mean of its divisors is an integer number (10267452).

Almost surely, 2^108992538 is an apocalyptic number.

108992538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

108992538 is an abundant number, since it is smaller than the sum of its proper divisors (137426310).

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

108992538 is a wasteful number, since it uses less digits than its factorization.

108992538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263298 (or 263295 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 108992538 is about 10439.9491378071. The cubic root of 108992538 is about 477.6747172735.

The spelling of 108992538 in words is "one hundred eight million, nine hundred ninety-two thousand, five hundred thirty-eight".