111087640 has 32 divisors (see below), whose sum is σ = 250252560. Its totient is φ = 44380800.

The previous prime is 111087611. The next prime is 111087659. The reversal of 111087640 is 46780111.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 111087599 and 111087608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54235 + ... + 56245.

Almost surely, 2^111087640 is an apocalyptic number.

111087640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111087640 is an abundant number, since it is smaller than the sum of its proper divisors (139164920).

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

111087640 is a wasteful number, since it uses less digits than its factorization.

111087640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403 (or 3399 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 111087640 is about 10539.8121425384. The cubic root of 111087640 is about 480.7160031854.

It can be divided in two parts, 1110876 and 40, that added together give a square (1110916 = 1054²).

The spelling of 111087640 in words is "one hundred eleven million, eighty-seven thousand, six hundred forty".