118238428 has 24 divisors (see below), whose sum is σ = 257975424. Its totient is φ = 46066800.

The previous prime is 118238401. The next prime is 118238443. The reversal of 118238428 is 824832811.

It is a super-2 number, since 2×118238428² = 27960651711822368, which contains 22 as substring.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 191638 + ... + 192253.

It is an arithmetic number, because the mean of its divisors is an integer number (10748976).

Almost surely, 2^118238428 is an apocalyptic number.

It is an amenable number.

118238428 is an abundant number, since it is smaller than the sum of its proper divisors (139736996).

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

118238428 is a wasteful number, since it uses less digits than its factorization.

118238428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383913 (or 383911 counting only the distinct ones).

The product of its digits is 24576, while the sum is 37.

The square root of 118238428 is about 10873.7494913208. The cubic root of 118238428 is about 490.8169462378.

The spelling of 118238428 in words is "one hundred eighteen million, two hundred thirty-eight thousand, four hundred twenty-eight".