1246776420 has 96 divisors (see below), whose sum is σ = 3631219200. Its totient is φ = 319348224.

The previous prime is 1246776373. The next prime is 1246776431. The reversal of 1246776420 is 246776421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171826 + ... + 178934.

It is an arithmetic number, because the mean of its divisors is an integer number (37825200).

Almost surely, 2^1246776420 is an apocalyptic number.

1246776420 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 1246776420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1815609600).

1246776420 is an abundant number, since it is smaller than the sum of its proper divisors (2384442780).

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

1246776420 is a wasteful number, since it uses less digits than its factorization.

1246776420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7237 (or 7235 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 1246776420 is about 35309.7213243039. The cubic root of 1246776420 is about 1076.2905488546.

Subtracting from 1246776420 its reverse (246776421), we obtain a palindrome (999999999).

The spelling of 1246776420 in words is "one billion, two hundred forty-six million, seven hundred seventy-six thousand, four hundred twenty".