388752538 has 8 divisors (see below), whose sum is σ = 584032032. Its totient is φ = 194075196.

The previous prime is 388752527. The next prime is 388752547. The reversal of 388752538 is 835257883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×388752538² = 302257071602882888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388752491 and 388752500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148920 + ... + 151507.

It is an arithmetic number, because the mean of its divisors is an integer number (73004004).

Almost surely, 2^388752538 is an apocalyptic number.

388752538 is a deficient number, since it is larger than the sum of its proper divisors (195279494).

388752538 is a wasteful number, since it uses less digits than its factorization.

388752538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301076.

The product of its digits is 1612800, while the sum is 49.

The square root of 388752538 is about 19716.8085145644. The cubic root of 388752538 is about 729.8345393435.

The spelling of 388752538 in words is "three hundred eighty-eight million, seven hundred fifty-two thousand, five hundred thirty-eight".