1263980 has 12 divisors (see below), whose sum is σ = 2654400. Its totient is φ = 505584.

The previous prime is 1263979. The next prime is 1264009. The reversal of 1263980 is 893621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31580 + ... + 31619.

It is an arithmetic number, because the mean of its divisors is an integer number (221200).

2^1263980 is an apocalyptic number.

1263980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263980 is an abundant number, since it is smaller than the sum of its proper divisors (1390420).

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

1263980 is a wasteful number, since it uses less digits than its factorization.

1263980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63208 (or 63206 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1263980 is about 1124.2686511684. The cubic root of 1263980 is about 108.1218332462.

The spelling of 1263980 in words is "one million, two hundred sixty-three thousand, nine hundred eighty".