116640426 has 32 divisors (see below), whose sum is σ = 267050880. Its totient is φ = 33270336.

The previous prime is 116640421. The next prime is 116640427. The reversal of 116640426 is 624046611.

It is a super-2 number, since 2×116640426² = 27209977954922952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 116640393 and 116640402.

It is not an unprimeable number, because it can be changed into a prime (116640421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27820 + ... + 31736.

It is an arithmetic number, because the mean of its divisors is an integer number (8345340).

Almost surely, 2^116640426 is an apocalyptic number.

116640426 is an abundant number, since it is smaller than the sum of its proper divisors (150410454).

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

116640426 is a wasteful number, since it uses less digits than its factorization.

116640426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 116640426 is about 10800.0197222042. The cubic root of 116640426 is about 488.5957658124.

The spelling of 116640426 in words is "one hundred sixteen million, six hundred forty thousand, four hundred twenty-six".