732428 has 12 divisors (see below), whose sum is σ = 1357272. Its totient is φ = 344640.

The previous prime is 732373. The next prime is 732439. The reversal of 732428 is 824237.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 732397 and 732406.

It is an unprimeable number.

732428 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 3 ways as a sum of consecutive naturals, for example, 5318 + ... + 5453.

It is an arithmetic number, because the mean of its divisors is an integer number (113106).

2⁷³²⁴²⁸ is an apocalyptic number.

It is an amenable number.

732428 is a deficient number, since it is larger than the sum of its proper divisors (624844).

732428 is a wasteful number, since it uses less digits than its factorization.

732428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10792 (or 10790 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 732428 is about 855.8200745484. The cubic root of 732428 is about 90.1408494154.

Subtracting 732428 from its reverse (824237), we obtain a square (91809 = 303²).

The spelling of 732428 in words is "seven hundred thirty-two thousand, four hundred twenty-eight".