1262782040 has 32 divisors (see below), whose sum is σ = 3059819280. Its totient is φ = 466257792.

The previous prime is 1262782013. The next prime is 1262782043. The reversal of 1262782040 is 402872621.

It is a junction number, because it is equal to n+sod(n) for n = 1262781988 and 1262782006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262782043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213694 + ... + 1214733.

Almost surely, 2^1262782040 is an apocalyptic number.

1262782040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262782040 is an abundant number, since it is smaller than the sum of its proper divisors (1797037240).

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

1262782040 is a wasteful number, since it uses less digits than its factorization.

1262782040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428451 (or 2428447 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1262782040 is about 35535.6446402763. The cubic root of 1262782040 is about 1080.8766430545.

The spelling of 1262782040 in words is "one billion, two hundred sixty-two million, seven hundred eighty-two thousand, forty".