1208720814 has 48 divisors (see below), whose sum is σ = 2854882944. Its totient is φ = 334197360.

The previous prime is 1208720813. The next prime is 1208720831. The reversal of 1208720814 is 4180278021.

It is a happy number.

It is a super-2 number, since 2×1208720814² = 2922012012393645192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208720813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25389 + ... + 55335.

It is an arithmetic number, because the mean of its divisors is an integer number (59476728).

Almost surely, 2^1208720814 is an apocalyptic number.

1208720814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1208720814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427441472).

1208720814 is an abundant number, since it is smaller than the sum of its proper divisors (1646162130).

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

1208720814 is a wasteful number, since it uses less digits than its factorization.

1208720814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30021 (or 29990 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 1208720814 is about 34766.6623937358. The cubic root of 1208720814 is about 1065.2265937658.

Adding to 1208720814 its reverse (4180278021), we get a palindrome (5388998835).

The spelling of 1208720814 in words is "one billion, two hundred eight million, seven hundred twenty thousand, eight hundred fourteen".