1783428 has 24 divisors (see below), whose sum is σ = 4183200. Its totient is φ = 591360.

The previous prime is 1783427. The next prime is 1783429. The reversal of 1783428 is 8243871.

It is an interprime number because it is at equal distance from previous prime (1783427) and next prime (1783429).

It is not an unprimeable number, because it can be changed into a prime (1783423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3748 + ... + 4196.

It is an arithmetic number, because the mean of its divisors is an integer number (174300).

2^1783428 is an apocalyptic number.

It is an amenable number.

1783428 is an abundant number, since it is smaller than the sum of its proper divisors (2399772).

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

1783428 is a wasteful number, since it uses less digits than its factorization.

1783428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 785 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 1783428 is about 1335.4504857912. The cubic root of 1783428 is about 121.2695763198.

It can be divided in two parts, 1783 and 428, that added together give a triangular number (2211 = T₆₆).

The spelling of 1783428 in words is "one million, seven hundred eighty-three thousand, four hundred twenty-eight".