1040328390 has 16 divisors (see below), whose sum is σ = 2496788208. Its totient is φ = 277420896.

The previous prime is 1040328389. The next prime is 1040328427. The reversal of 1040328390 is 938230401.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 34677613 = 1040328390 / (1 + 0 + 4 + 0 + 3 + 2 + 8 + 3 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17338777 + ... + 17338836.

It is an arithmetic number, because the mean of its divisors is an integer number (156049263).

Almost surely, 2^1040328390 is an apocalyptic number.

1040328390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1040328390 is an abundant number, since it is smaller than the sum of its proper divisors (1456459818).

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

1040328390 is a wasteful number, since it uses less digits than its factorization.

1040328390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34677623.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1040328390 is about 32254.1220621489. The cubic root of 1040328390 is about 1013.2660308727.

Adding to 1040328390 its reverse (938230401), we get a palindrome (1978558791).

The spelling of 1040328390 in words is "one billion, forty million, three hundred twenty-eight thousand, three hundred ninety".