388003872 has 48 divisors (see below), whose sum is σ = 1022257152. Its totient is φ = 128858880.

The previous prime is 388003849. The next prime is 388003873. The reversal of 388003872 is 278300883.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 388003872.

It is not an unprimeable number, because it can be changed into a prime (388003873) 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, 19297 + ... + 33887.

It is an arithmetic number, because the mean of its divisors is an integer number (21297024).

Almost surely, 2^388003872 is an apocalyptic number.

388003872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

388003872 is an abundant number, since it is smaller than the sum of its proper divisors (634253280).

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

388003872 is a wasteful number, since it uses less digits than its factorization.

388003872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14881 (or 14873 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 388003872 is about 19697.8138888558. The cubic root of 388003872 is about 729.3657291670.

The spelling of 388003872 in words is "three hundred eighty-eight million, three thousand, eight hundred seventy-two".