118797840 has 320 divisors, whose sum is σ = 478302720. Its totient is φ = 26873856.

The previous prime is 118797827. The next prime is 118797841. The reversal of 118797840 is 48797811.

It is a super-2 number, since 2×118797840² = 28225853577331200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (118797841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1224672 + ... + 1224768.

It is an arithmetic number, because the mean of its divisors is an integer number (1494696).

Almost surely, 2^118797840 is an apocalyptic number.

118797840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118797840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239151360).

118797840 is an abundant number, since it is smaller than the sum of its proper divisors (359504880).

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

118797840 is an frugal number, since it uses more digits than its factorization.

118797840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 118797840 is about 10899.4421875617. The cubic root of 118797840 is about 491.5897829923.

The spelling of 118797840 in words is "one hundred eighteen million, seven hundred ninety-seven thousand, eight hundred forty".