388917852 has 24 divisors (see below), whose sum is σ = 922857600. Its totient is φ = 127441776.

The previous prime is 388917827. The next prime is 388917853. The reversal of 388917852 is 258719883.

It is a junction number, because it is equal to n+sod(n) for n = 388917795 and 388917804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388917853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273952 + ... + 275367.

It is an arithmetic number, because the mean of its divisors is an integer number (38452400).

Almost surely, 2^388917852 is an apocalyptic number.

It is an amenable number.

388917852 is an abundant number, since it is smaller than the sum of its proper divisors (533939748).

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

388917852 is a wasteful number, since it uses less digits than its factorization.

388917852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549385 (or 549383 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The square root of 388917852 is about 19721.0002788905. Note that the first 3 decimals coincide. The cubic root of 388917852 is about 729.9379768409.

The spelling of 388917852 in words is "three hundred eighty-eight million, nine hundred seventeen thousand, eight hundred fifty-two".