732420 has 72 divisors (see below), whose sum is σ = 2400216. Its totient is φ = 179712.

The previous prime is 732373. The next prime is 732439. The reversal of 732420 is 24237.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36864 + 695556 = 192^2 + 834^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 732393 and 732402.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 732420.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2184 + ... + 2496.

2⁷³²⁴²⁰ 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 732420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1200108).

732420 is an abundant number, since it is smaller than the sum of its proper divisors (1667796).

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

732420 is a wasteful number, since it uses less digits than its factorization.

732420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 732420 is about 855.8154006560. The cubic root of 732420 is about 90.1405212242.

Adding to 732420 its reverse (24237), we get a palindrome (756657).

The spelling of 732420 in words is "seven hundred thirty-two thousand, four hundred twenty".