393428750 has 160 divisors (see below), whose sum is σ = 906909696. Its totient is φ = 126000000.

The previous prime is 393428729. The next prime is 393428863. The reversal of 393428750 is 57824393.

It is a junction number, because it is equal to n+sod(n) for n = 393428698 and 393428707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5541215 + ... + 5541285.

Almost surely, 2^393428750 is an apocalyptic number.

393428750 is an abundant number, since it is smaller than the sum of its proper divisors (513480946).

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

393428750 is a wasteful number, since it uses less digits than its factorization.

393428750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 393428750 is about 19835.0384421105. The cubic root of 393428750 is about 732.7492192088.

The spelling of 393428750 in words is "three hundred ninety-three million, four hundred twenty-eight thousand, seven hundred fifty".