1039428 has 36 divisors (see below), whose sum is σ = 2830828. Its totient is φ = 319680.

The previous prime is 1039427. The next prime is 1039429. The reversal of 1039428 is 8249301.

It is an interprime number because it is at equal distance from previous prime (1039427) and next prime (1039429).

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 627264 = 642^2 + 792^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1039421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643 + ... + 1578.

2^1039428 is an apocalyptic number.

1039428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1039428 is an abundant number, since it is smaller than the sum of its proper divisors (1791400).

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

1039428 is a wasteful number, since it uses less digits than its factorization.

1039428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 2239 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1039428 is about 1019.5234180734. The cubic root of 1039428 is about 101.2973623866.

The spelling of 1039428 in words is "one million, thirty-nine thousand, four hundred twenty-eight".