1208238720 has 128 divisors (see below), whose sum is σ = 4147597440. Its totient is φ = 297406464.

The previous prime is 1208238697. The next prime is 1208238727. The reversal of 1208238720 is 278328021.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1208238727) 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, 757 + ... + 49163.

It is an arithmetic number, because the mean of its divisors is an integer number (32403105).

Almost surely, 2^1208238720 is an apocalyptic number.

1208238720 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 1208238720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073798720).

1208238720 is an abundant number, since it is smaller than the sum of its proper divisors (2939358720).

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

1208238720 is a wasteful number, since it uses less digits than its factorization.

1208238720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48442 (or 48430 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 1208238720 is about 34759.7284224144. The cubic root of 1208238720 is about 1065.0849543199.

The spelling of 1208238720 in words is "one billion, two hundred eight million, two hundred thirty-eight thousand, seven hundred twenty".