388042092 has 72 divisors (see below), whose sum is σ = 1035834800. Its totient is φ = 122145408.

The previous prime is 388042079. The next prime is 388042093. The reversal of 388042092 is 290240883.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (388042093) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 270834 + ... + 272262.

Almost surely, 2^388042092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388042092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517917400).

388042092 is an abundant number, since it is smaller than the sum of its proper divisors (647792708).

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

388042092 is a wasteful number, since it uses less digits than its factorization.

388042092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 388042092 is about 19698.7840233858. The cubic root of 388042092 is about 729.3896769030.

The spelling of 388042092 in words is "three hundred eighty-eight million, forty-two thousand, ninety-two".