1200992620 has 48 divisors (see below), whose sum is σ = 2594521440. Its totient is φ = 466642944.

The previous prime is 1200992609. The next prime is 1200992627. The reversal of 1200992620 is 262990021.

It is not an unprimeable number, because it can be changed into a prime (1200992627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686587 + ... + 688333.

It is an arithmetic number, because the mean of its divisors is an integer number (54052530).

Almost surely, 2^1200992620 is an apocalyptic number.

1200992620 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 1200992620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297260720).

1200992620 is an abundant number, since it is smaller than the sum of its proper divisors (1393528820).

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

1200992620 is a wasteful number, since it uses less digits than its factorization.

1200992620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2720 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1200992620 is about 34655.3404253948. The cubic root of 1200992620 is about 1062.9514929161.

The spelling of 1200992620 in words is "one billion, two hundred million, nine hundred ninety-two thousand, six hundred twenty".