1423828 has 24 divisors (see below), whose sum is σ = 2873024. Its totient is φ = 604800.

The previous prime is 1423819. The next prime is 1423843. The reversal of 1423828 is 8283241.

1423828 is a nontrivial binomial coefficient, being equal to C(1688, 2).

It is a Harshad number since it is a multiple of its sum of digits (28).

1423828 is an undulating number in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1423796 and 1423805.

It is a congruent 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, 5788 + ... + 6028.

2^1423828 is an apocalyptic number.

1423828 is the 1687-th triangular number and also the 844-th hexagonal number.

1423828 is the 563-rd centered nonagonal number.

It is an amenable number.

1423828 is an abundant number, since it is smaller than the sum of its proper divisors (1449196).

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

1423828 is a wasteful number, since it uses less digits than its factorization.

1423828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 461 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 1423828 is about 1193.2426408740. The cubic root of 1423828 is about 112.4999967078.

The spelling of 1423828 in words is "one million, four hundred twenty-three thousand, eight hundred twenty-eight".