393428030 has 16 divisors (see below), whose sum is σ = 727310880. Its totient is φ = 153117792.

The previous prime is 393428029. The next prime is 393428053. The reversal of 393428030 is 30824393.

It is a happy number.

It is a super-2 number, since 2×393428030² = 309571229579361800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531290 + ... + 532029.

It is an arithmetic number, because the mean of its divisors is an integer number (45456930).

Almost surely, 2^393428030 is an apocalyptic number.

393428030 is a deficient number, since it is larger than the sum of its proper divisors (333882850).

393428030 is a wasteful number, since it uses less digits than its factorization.

393428030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063363.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 393428030 is about 19835.0202924020. The cubic root of 393428030 is about 732.7487722158.

The spelling of 393428030 in words is "three hundred ninety-three million, four hundred twenty-eight thousand, thirty".