39228840 has 128 divisors (see below), whose sum is σ = 149472000. Its totient is φ = 8964864.

The previous prime is 39228829. The next prime is 39228853. The reversal of 39228840 is 4882293.

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

It is a junction number, because it is equal to n+sod(n) for n = 39228795 and 39228804.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4966 + ... + 10154.

It is an arithmetic number, because the mean of its divisors is an integer number (1167750).

Almost surely, 2^39228840 is an apocalyptic number.

39228840 is a gapful number since it is divisible by the number (30) 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 39228840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74736000).

39228840 is an abundant number, since it is smaller than the sum of its proper divisors (110243160).

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

39228840 is a wasteful number, since it uses less digits than its factorization.

39228840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216 (or 5206 counting only the distinct ones).

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

The square root of 39228840 is about 6263.2930635569. The cubic root of 39228840 is about 339.7831373709.

The spelling of 39228840 in words is "thirty-nine million, two hundred twenty-eight thousand, eight hundred forty".