118272821 has 8 divisors (see below), whose sum is σ = 121465344. Its totient is φ = 115108560.

The previous prime is 118272811. The next prime is 118272829. The reversal of 118272821 is 128272811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118272821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118272829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1556 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (15183168).

Almost surely, 2^118272821 is an apocalyptic number.

It is an amenable number.

118272821 is a deficient number, since it is larger than the sum of its proper divisors (3192523).

118272821 is a wasteful number, since it uses less digits than its factorization.

118272821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14131.

The product of its digits is 3584, while the sum is 32.

The square root of 118272821 is about 10875.3308455421. The cubic root of 118272821 is about 490.8645309670.

The spelling of 118272821 in words is "one hundred eighteen million, two hundred seventy-two thousand, eight hundred twenty-one".