1206990720 has 448 divisors, whose sum is σ = 4682412000. Its totient is φ = 295612416.

The previous prime is 1206990679. The next prime is 1206990721. The reversal of 1206990720 is 270996021.

It is a super-2 number, since 2×1206990720² = 2913653196332236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206990721) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6065181 + ... + 6065379.

Almost surely, 2^1206990720 is an apocalyptic number.

1206990720 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 1206990720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2341206000).

1206990720 is an abundant number, since it is smaller than the sum of its proper divisors (3475421280).

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

1206990720 is an equidigital number, since it uses as much as digits as its factorization.

1206990720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1206990720 is about 34741.7719755340. The cubic root of 1206990720 is about 1064.7181162329.

The spelling of 1206990720 in words is "one billion, two hundred six million, nine hundred ninety thousand, seven hundred twenty".