783420 has 48 divisors (see below), whose sum is σ = 2395008. Its totient is φ = 189760.

The previous prime is 783413. The next prime is 783421. The reversal of 783420 is 24387.

It is a super-2 number, since 2×783420² = 1227493792800, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2⁷⁸³⁴²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 783420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197504).

783420 is an abundant number, since it is smaller than the sum of its proper divisors (1611588).

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

783420 is a wasteful number, since it uses less digits than its factorization.

783420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 783420 is about 885.1101626351. The cubic root of 783420 is about 92.1859816852.

The spelling of 783420 in words is "seven hundred eighty-three thousand, four hundred twenty".