1263676420 has 48 divisors (see below), whose sum is σ = 2687489280. Its totient is φ = 499071744.

The previous prime is 1263676391. The next prime is 1263676433. The reversal of 1263676420 is 246763621.

It is a self number, because there is not a number n which added to its sum of digits gives 1263676420.

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 15 ways as a sum of consecutive naturals, for example, 784576 + ... + 786184.

It is an arithmetic number, because the mean of its divisors is an integer number (55989360).

Almost surely, 2^1263676420 is an apocalyptic number.

1263676420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263676420 is an abundant number, since it is smaller than the sum of its proper divisors (1423812860).

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

1263676420 is a wasteful number, since it uses less digits than its factorization.

1263676420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2090 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 1263676420 is about 35548.2266786966. The cubic root of 1263676420 is about 1081.1317639654.

The spelling of 1263676420 in words is "one billion, two hundred sixty-three million, six hundred seventy-six thousand, four hundred twenty".