1263290424 has 128 divisors (see below), whose sum is σ = 3582074880. Its totient is φ = 367804800.

The previous prime is 1263290423. The next prime is 1263290453. The reversal of 1263290424 is 4240923621.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263290423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1333519 + ... + 1334465.

It is an arithmetic number, because the mean of its divisors is an integer number (27984960).

Almost surely, 2^1263290424 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 1263290424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791037440).

1263290424 is an abundant number, since it is smaller than the sum of its proper divisors (2318784456).

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

1263290424 is a wasteful number, since it uses less digits than its factorization.

1263290424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1263290424 is about 35542.7970762010. The cubic root of 1263290424 is about 1081.0216738012.

The spelling of 1263290424 in words is "one billion, two hundred sixty-three million, two hundred ninety thousand, four hundred twenty-four".