1029040 has 40 divisors (see below), whose sum is σ = 2522160. Its totient is φ = 389376.

The previous prime is 1029037. The next prime is 1029103. The reversal of 1029040 is 409201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam 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, 1182 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (63054).

2^1029040 is an apocalyptic number.

1029040 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 1029040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261080).

1029040 is an abundant number, since it is smaller than the sum of its proper divisors (1493120).

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

1029040 is a wasteful number, since it uses less digits than its factorization.

1029040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1029040 is about 1014.4160882005. The cubic root of 1029040 is about 100.9587780674.

The spelling of 1029040 in words is "one million, twenty-nine thousand, forty".