993428 has 6 divisors (see below), whose sum is σ = 1738506. Its totient is φ = 496712.

The previous prime is 993407. The next prime is 993431. The reversal of 993428 is 824399.

It can be written as a sum of positive squares in only one way, i.e., 659344 + 334084 = 812^2 + 578^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124175 + ... + 124182.

It is an arithmetic number, because the mean of its divisors is an integer number (289751).

2⁹⁹³⁴²⁸ is an apocalyptic number.

It is an amenable number.

993428 is a deficient number, since it is larger than the sum of its proper divisors (745078).

993428 is a wasteful number, since it uses less digits than its factorization.

993428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248361 (or 248359 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 993428 is about 996.7085832880. The cubic root of 993428 is about 99.7804516714.

The spelling of 993428 in words is "nine hundred ninety-three thousand, four hundred twenty-eight".