1642560 has 112 divisors (see below), whose sum is σ = 5486400. Its totient is φ = 415744.

The previous prime is 1642559. The next prime is 1642567. The reversal of 1642560 is 652461.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1642560.

It is not an unprimeable number, because it can be changed into a prime (1642567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27811 + ... + 27869.

2^1642560 is an apocalyptic number.

1642560 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 1642560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2743200).

1642560 is an abundant number, since it is smaller than the sum of its proper divisors (3843840).

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

1642560 is a wasteful number, since it uses less digits than its factorization.

1642560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1642560 is about 1281.6239698133. The cubic root of 1642560 is about 117.9886994828.

Subtracting from 1642560 its reverse (652461), we obtain a palindrome (990099).

The spelling of 1642560 in words is "one million, six hundred forty-two thousand, five hundred sixty".