111902990 has 8 divisors (see below), whose sum is σ = 201425400. Its totient is φ = 44761192.

The previous prime is 111902977. The next prime is 111903013. The reversal of 111902990 is 99209111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595140 + ... + 5595159.

It is an arithmetic number, because the mean of its divisors is an integer number (25178175).

Almost surely, 2^111902990 is an apocalyptic number.

111902990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111902990 is a deficient number, since it is larger than the sum of its proper divisors (89522410).

111902990 is a wasteful number, since it uses less digits than its factorization.

111902990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190306.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 111902990 is about 10578.4209596707. The cubic root of 111902990 is about 481.8892412644.

The spelling of 111902990 in words is "one hundred eleven million, nine hundred two thousand, nine hundred ninety".