1206822240 has 720 divisors, whose sum is σ = 5022032400. Its totient is φ = 271724544.

The previous prime is 1206822217. The next prime is 1206822251. The reversal of 1206822240 is 422286021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 41614546 + ... + 41614574.

It is an arithmetic number, because the mean of its divisors is an integer number (6975045).

Almost surely, 2^1206822240 is an apocalyptic number.

1206822240 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 1206822240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2511016200).

1206822240 is an abundant number, since it is smaller than the sum of its proper divisors (3815210160).

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

1206822240 is a wasteful number, since it uses less digits than its factorization.

1206822240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 1206822240 is about 34739.3471441246. The cubic root of 1206822240 is about 1064.6685737212.

The spelling of 1206822240 in words is "one billion, two hundred six million, eight hundred twenty-two thousand, two hundred forty".