388540572 has 48 divisors (see below), whose sum is σ = 1037111040. Its totient is φ = 110904192.

The previous prime is 388540549. The next prime is 388540597. The reversal of 388540572 is 275045883.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134568 + ... + 137424.

It is an arithmetic number, because the mean of its divisors is an integer number (21606480).

Almost surely, 2^388540572 is an apocalyptic number.

It is an amenable number.

388540572 is an abundant number, since it is smaller than the sum of its proper divisors (648570468).

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

388540572 is a wasteful number, since it uses less digits than its factorization.

388540572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490 (or 4488 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 388540572 is about 19711.4325202406. The cubic root of 388540572 is about 729.7018686272.

The spelling of 388540572 in words is "three hundred eighty-eight million, five hundred forty thousand, five hundred seventy-two".