111890434 has 4 divisors (see below), whose sum is σ = 167835654. Its totient is φ = 55945216.

The previous prime is 111890431. The next prime is 111890437. The reversal of 111890434 is 434098111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (111890431) and next prime (111890437).

It can be written as a sum of positive squares in only one way, i.e., 88416409 + 23474025 = 9403^2 + 4845^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111890396 and 111890405.

It is not an unprimeable number, because it can be changed into a prime (111890431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27972607 + ... + 27972610.

Almost surely, 2^111890434 is an apocalyptic number.

111890434 is a deficient number, since it is larger than the sum of its proper divisors (55945220).

111890434 is an equidigital number, since it uses as much as digits as its factorization.

111890434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55945219.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 111890434 is about 10577.8274707049. The cubic root of 111890434 is about 481.8712172372.

The spelling of 111890434 in words is "one hundred eleven million, eight hundred ninety thousand, four hundred thirty-four".