1285930 has 16 divisors (see below), whose sum is σ = 2415744. Its totient is φ = 491920.

The previous prime is 1285913. The next prime is 1285937. The reversal of 1285930 is 395821.

It is not an unprimeable number, because it can be changed into a prime (1285937) 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, 2566 + ... + 3025.

It is an arithmetic number, because the mean of its divisors is an integer number (150984).

2^1285930 is an apocalyptic number.

1285930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1285930 is a deficient number, since it is larger than the sum of its proper divisors (1129814).

1285930 is a wasteful number, since it uses less digits than its factorization.

1285930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1285930 is about 1133.9885360973. The cubic root of 1285930 is about 108.7441182356.

The spelling of 1285930 in words is "one million, two hundred eighty-five thousand, nine hundred thirty".