1046640 has 120 divisors (see below), whose sum is σ = 3816720. Its totient is φ = 236544.

The previous prime is 1046627. The next prime is 1046641. The reversal of 1046640 is 466401.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a nialpdrome in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11716 + ... + 11804.

It is an arithmetic number, because the mean of its divisors is an integer number (31806).

2^1046640 is an apocalyptic number.

1046640 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 1046640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908360).

1046640 is an abundant number, since it is smaller than the sum of its proper divisors (2770080).

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

1046640 is a wasteful number, since it uses less digits than its factorization.

1046640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1046640 is about 1023.0542507609. The cubic root of 1046640 is about 101.5311042207.

The spelling of 1046640 in words is "one million, forty-six thousand, six hundred forty".