1490784 has 48 divisors (see below), whose sum is σ = 4000752. Its totient is φ = 485888.

The previous prime is 1490773. The next prime is 1490789. The reversal of 1490784 is 4870941.

1490784 = 120² + 121² + ... + 183².

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490789) 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, 4942 + ... + 5234.

It is an arithmetic number, because the mean of its divisors is an integer number (83349).

2^1490784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1490784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2000376).

1490784 is an abundant number, since it is smaller than the sum of its proper divisors (2509968).

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

1490784 is a wasteful number, since it uses less digits than its factorization.

1490784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1490784 is about 1220.9766582535. The cubic root of 1490784 is about 114.2365050049.

The spelling of 1490784 in words is "one million, four hundred ninety thousand, seven hundred eighty-four".