1002428 has 12 divisors (see below), whose sum is σ = 2004912. Its totient is φ = 429600.

The previous prime is 1002427. The next prime is 1002433. The reversal of 1002428 is 8242001.

1002428 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17873 + ... + 17928.

It is an arithmetic number, because the mean of its divisors is an integer number (167076).

2^1002428 is an apocalyptic number.

It is an amenable number.

1002428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1002428 is a wasteful number, since it uses less digits than its factorization.

1002428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35812 (or 35810 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1002428 is about 1001.2132639952. The cubic root of 1002428 is about 100.0808679195.

Adding to 1002428 its reverse (8242001), we get a palindrome (9244429).

The spelling of 1002428 in words is "one million, two thousand, four hundred twenty-eight".