388505241 has 32 divisors (see below), whose sum is σ = 585440640. Its totient is φ = 257774400.

The previous prime is 388505231. The next prime is 388505263. The reversal of 388505241 is 142505883.

It is a happy number.

388505241 is a `hidden beast` number, since 3 + 88 + 50 + 524 + 1 = 666.

It is not a de Polignac number, because 388505241 - 2⁵ = 388505209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388505196 and 388505205.

It is not an unprimeable number, because it can be changed into a prime (388505231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 876766 + ... + 877208.

It is an arithmetic number, because the mean of its divisors is an integer number (18295020).

Almost surely, 2^388505241 is an apocalyptic number.

It is an amenable number.

388505241 is a deficient number, since it is larger than the sum of its proper divisors (196935399).

388505241 is an frugal number, since it uses more digits than its factorization.

388505241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 388505241 is about 19710.5362940738. The cubic root of 388505241 is about 729.6797500634.

The spelling of 388505241 in words is "three hundred eighty-eight million, five hundred five thousand, two hundred forty-one".