118640428 has 6 divisors (see below), whose sum is σ = 207620756. Its totient is φ = 59320212.

The previous prime is 118640419. The next prime is 118640437. The reversal of 118640428 is 824046811.

It is an interprime number because it is at equal distance from previous prime (118640419) and next prime (118640437).

It is a junction number, because it is equal to n+sod(n) for n = 118640393 and 118640402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14830050 + ... + 14830057.

Almost surely, 2^118640428 is an apocalyptic number.

It is an amenable number.

118640428 is a deficient number, since it is larger than the sum of its proper divisors (88980328).

118640428 is a wasteful number, since it uses less digits than its factorization.

118640428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29660111 (or 29660109 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 118640428 is about 10892.2186904230. The cubic root of 118640428 is about 491.3725614943.

It can be divided in two parts, 1186 and 40428, that added together give a palindrome (41614).

The spelling of 118640428 in words is "one hundred eighteen million, six hundred forty thousand, four hundred twenty-eight".