118921440 has 192 divisors, whose sum is σ = 414554112. Its totient is φ = 28416000.

The previous prime is 118921433. The next prime is 118921447. The reversal of 118921440 is 44129811.

It is an interprime number because it is at equal distance from previous prime (118921433) and next prime (118921447).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 118921398 and 118921407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118921447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 533169 + ... + 533391.

It is an arithmetic number, because the mean of its divisors is an integer number (2159136).

Almost surely, 2^118921440 is an apocalyptic number.

118921440 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 118921440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207277056).

118921440 is an abundant number, since it is smaller than the sum of its proper divisors (295632672).

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

118921440 is a wasteful number, since it uses less digits than its factorization.

118921440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 118921440 is about 10905.1107284612. The cubic root of 118921440 is about 491.7602109988.

The spelling of 118921440 in words is "one hundred eighteen million, nine hundred twenty-one thousand, four hundred forty".