1984280 has 32 divisors (see below), whose sum is σ = 4514400. Its totient is φ = 784896.

The previous prime is 1984271. The next prime is 1984309. The reversal of 1984280 is 824891.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4301 + ... + 4739.

It is an arithmetic number, because the mean of its divisors is an integer number (141075).

2^1984280 is an apocalyptic number.

1984280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1984280 is an abundant number, since it is smaller than the sum of its proper divisors (2530120).

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

1984280 is a wasteful number, since it uses less digits than its factorization.

1984280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1984280 is about 1408.6447387471. The cubic root of 1984280 is about 125.6611370177.

The spelling of 1984280 in words is "one million, nine hundred eighty-four thousand, two hundred eighty".