1408428 has 96 divisors (see below), whose sum is σ = 4408320. Its totient is φ = 384912.

The previous prime is 1408417. The next prime is 1408453. The reversal of 1408428 is 8248041.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 61225 + ... + 61247.

It is an arithmetic number, because the mean of its divisors is an integer number (45920).

2^1408428 is an apocalyptic number.

1408428 is a gapful number since it is divisible by the number (18) 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 1408428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204160).

1408428 is an abundant number, since it is smaller than the sum of its proper divisors (2999892).

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

1408428 is an equidigital number, since it uses as much as digits as its factorization.

1408428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1408428 is about 1186.7720926951. The cubic root of 1408428 is about 112.0929288260.

The spelling of 1408428 in words is "one million, four hundred eight thousand, four hundred twenty-eight".