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BaseRepresentation
bin1110000101111…
…10100011110000
322020110020210001
413002332203300
5220231033130
615421515344
72633601520
oct702764360
9266406701
10118221040
1160807243
1233712b54
131b6532a2
14119b5680
15a5a36ca
hex70be8f0

118221040 has 160 divisors (see below), whose sum is σ = 339978240. Its totient is φ = 37324800.

The previous prime is 118221013. The next prime is 118221053. The reversal of 118221040 is 40122811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 118220999 and 118221017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436105 + ... + 436375.

It is an arithmetic number, because the mean of its divisors is an integer number (2124864).

Almost surely, 2118221040 is an apocalyptic number.

118221040 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 118221040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169989120).

118221040 is an abundant number, since it is smaller than the sum of its proper divisors (221757200).

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

118221040 is a wasteful number, since it uses less digits than its factorization.

118221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 118221040 is about 10872.9499217094. The cubic root of 118221040 is about 490.7928854098.

Adding to 118221040 its reverse (40122811), we get a palindrome (158343851).

It can be divided in two parts, 1182 and 21040, that added together give a palindrome (22222).

The spelling of 118221040 in words is "one hundred eighteen million, two hundred twenty-one thousand, forty".