1985320 has 16 divisors (see below), whose sum is σ = 4467060. Its totient is φ = 794112.

The previous prime is 1985317. The next prime is 1985363. The reversal of 1985320 is 235891.

It can be written as a sum of positive squares in 2 ways, for example, as 1898884 + 86436 = 1378^2 + 294^2 .

It is a plaindrome in base 11.

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, 24777 + ... + 24856.

2^1985320 is an apocalyptic number.

1985320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1985320 is an abundant number, since it is smaller than the sum of its proper divisors (2481740).

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

1985320 is a wasteful number, since it uses less digits than its factorization.

1985320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49644 (or 49640 counting only the distinct ones).

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

The square root of 1985320 is about 1409.0138395346. The cubic root of 1985320 is about 125.6830870042.

The spelling of 1985320 in words is "one million, nine hundred eighty-five thousand, three hundred twenty".