1630560 has 96 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 419328.

The previous prime is 1630549. The next prime is 1630597. The reversal of 1630560 is 650361.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20601 + ... + 20679.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2^1630560 is an apocalyptic number.

1630560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661120).

1630560 is an abundant number, since it is smaller than the sum of its proper divisors (3691680).

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

1630560 is a wasteful number, since it uses less digits than its factorization.

1630560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1630560 is about 1276.9338275729. The cubic root of 1630560 is about 117.7006681167.

The spelling of 1630560 in words is "one million, six hundred thirty thousand, five hundred sixty".