393402648 has 96 divisors (see below), whose sum is σ = 1045986480. Its totient is φ = 123206400.

The previous prime is 393402641. The next prime is 393402673. The reversal of 393402648 is 846204393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393402641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 853138 + ... + 853598.

Almost surely, 2^393402648 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 393402648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522993240).

393402648 is an abundant number, since it is smaller than the sum of its proper divisors (652583832).

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

393402648 is a wasteful number, since it uses less digits than its factorization.

393402648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 393402648 is about 19834.3804541508. The cubic root of 393402648 is about 732.7330141203.

The spelling of 393402648 in words is "three hundred ninety-three million, four hundred two thousand, six hundred forty-eight".