388621284 has 24 divisors (see below), whose sum is σ = 907408320. Its totient is φ = 129451104.

The previous prime is 388621283. The next prime is 388621313. The reversal of 388621284 is 482126883.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (388621283) 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, 8322 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (37808680).

Almost surely, 2^388621284 is an apocalyptic number.

It is an amenable number.

388621284 is an abundant number, since it is smaller than the sum of its proper divisors (518787036).

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

388621284 is a wasteful number, since it uses less digits than its factorization.

388621284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22339 (or 22337 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 388621284 is about 19713.4797537117. The cubic root of 388621284 is about 729.7523924109.

The spelling of 388621284 in words is "three hundred eighty-eight million, six hundred twenty-one thousand, two hundred eighty-four".