118001520 has 240 divisors, whose sum is σ = 488010432. Its totient is φ = 24883200.

The previous prime is 118001497. The next prime is 118001557. The reversal of 118001520 is 25100811.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 118001493 and 118001502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64620 + ... + 66420.

Almost surely, 2^118001520 is an apocalyptic number.

118001520 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 118001520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244005216).

118001520 is an abundant number, since it is smaller than the sum of its proper divisors (370008912).

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

118001520 is a wasteful number, since it uses less digits than its factorization.

118001520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 118001520 is about 10862.8504546459. The cubic root of 118001520 is about 490.4889191884.

The spelling of 118001520 in words is "one hundred eighteen million, one thousand, five hundred twenty".