39228384 has 144 divisors (see below), whose sum is σ = 120213072. Its totient is φ = 11096064.

The previous prime is 39228377. The next prime is 39228391. The reversal of 39228384 is 48382293.

It is an interprime number because it is at equal distance from previous prime (39228377) and next prime (39228391).

It is a super-2 number, since 2×39228384² = 3077732222502912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 912267 + ... + 912309.

It is an arithmetic number, because the mean of its divisors is an integer number (834813).

Almost surely, 2^39228384 is an apocalyptic number.

39228384 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39228384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60106536).

39228384 is an abundant number, since it is smaller than the sum of its proper divisors (80984688).

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

39228384 is a wasteful number, since it uses less digits than its factorization.

39228384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 78 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 39228384 is about 6263.2566608754. The cubic root of 39228384 is about 339.7818208079.

The spelling of 39228384 in words is "thirty-nine million, two hundred twenty-eight thousand, three hundred eighty-four".