736424 has 32 divisors (see below), whose sum is σ = 1522920. Its totient is φ = 331776.

The previous prime is 736409. The next prime is 736429. The reversal of 736424 is 424637.

It is a happy number.

736424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 515524 + 220900 = 718^2 + 470^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a d-powerful number, because it can be written as 7³ + 3¹² + 4⁴ + 6⁵ + 2¹⁷ + 4⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 736393 and 736402.

It is not an unprimeable number, because it can be changed into a prime (736429) by changing a digit.

736424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7544 + ... + 7640.

2⁷³⁶⁴²⁴ 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 736424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (761460).

736424 is an abundant number, since it is smaller than the sum of its proper divisors (786496).

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

736424 is a wasteful number, since it uses less digits than its factorization.

736424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 185 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 736424 is about 858.1515017758. The cubic root of 736424 is about 90.3044831308.

The spelling of 736424 in words is "seven hundred thirty-six thousand, four hundred twenty-four".