1262948940 has 144 divisors (see below), whose sum is σ = 4200408576. Its totient is φ = 304617600.

The previous prime is 1262948933. The next prime is 1262948963. The reversal of 1262948940 is 498492621.

1262948940 is a `hidden beast` number, since 12 + 629 + 4 + 8 + 9 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416269 + ... + 419291.

It is an arithmetic number, because the mean of its divisors is an integer number (29169504).

Almost surely, 2^1262948940 is an apocalyptic number.

1262948940 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 1262948940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2100204288).

1262948940 is an abundant number, since it is smaller than the sum of its proper divisors (2937459636).

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

1262948940 is a wasteful number, since it uses less digits than its factorization.

1262948940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1262948940 is about 35537.9929089981. The cubic root of 1262948940 is about 1080.9242602360.

The spelling of 1262948940 in words is "one billion, two hundred sixty-two million, nine hundred forty-eight thousand, nine hundred forty".