1206818040 has 128 divisors (see below), whose sum is σ = 3679603200. Its totient is φ = 316608000.

The previous prime is 1206818021. The next prime is 1206818047. The reversal of 1206818040 is 408186021.

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 = 1206817989 and 1206818007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206818047) 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, 3102166 + ... + 3102554.

It is an arithmetic number, because the mean of its divisors is an integer number (28746900).

Almost surely, 2^1206818040 is an apocalyptic number.

1206818040 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 1206818040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1839801600).

1206818040 is an abundant number, since it is smaller than the sum of its proper divisors (2472785160).

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

1206818040 is a wasteful number, since it uses less digits than its factorization.

1206818040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1206818040 is about 34739.2866938859. The cubic root of 1206818040 is about 1064.6673386282.

The spelling of 1206818040 in words is "one billion, two hundred six million, eight hundred eighteen thousand, forty".