1201940784 has 240 divisors, whose sum is σ = 3802256640. Its totient is φ = 351336960.

The previous prime is 1201940723. The next prime is 1201940797. The reversal of 1201940784 is 4870491021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8646987 + ... + 8647125.

It is an arithmetic number, because the mean of its divisors is an integer number (15842736).

Almost surely, 2^1201940784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201940784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1901128320).

1201940784 is an abundant number, since it is smaller than the sum of its proper divisors (2600315856).

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

1201940784 is a wasteful number, since it uses less digits than its factorization.

1201940784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1201940784 is about 34669.0176382314. The cubic root of 1201940784 is about 1063.2311469320.

The spelling of 1201940784 in words is "one billion, two hundred one million, nine hundred forty thousand, seven hundred eighty-four".