388765224 has 32 divisors (see below), whose sum is σ = 1079904000. Its totient is φ = 129588336.

The previous prime is 388765217. The next prime is 388765243. The reversal of 388765224 is 422567883.

It is a super-2 number, since 2×388765224² = 302276798783540352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 388765224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899704 + ... + 900135.

It is an arithmetic number, because the mean of its divisors is an integer number (33747000).

Almost surely, 2^388765224 is an apocalyptic number.

It is an amenable number.

388765224 is an abundant number, since it is smaller than the sum of its proper divisors (691138776).

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

388765224 is a wasteful number, since it uses less digits than its factorization.

388765224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799854 (or 1799844 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 388765224 is about 19717.1302171487. The cubic root of 388765224 is about 729.8424780528.

It can be divided in two parts, 38876 and 5224, that added together give a square (44100 = 210²).

The spelling of 388765224 in words is "three hundred eighty-eight million, seven hundred sixty-five thousand, two hundred twenty-four".