38043840 has 112 divisors (see below), whose sum is σ = 126114048. Its totient is φ = 9698304.

The previous prime is 38043827. The next prime is 38043857. The reversal of 38043840 is 4834083.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 38043798 and 38043807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21219 + ... + 22941.

Almost surely, 2^38043840 is an apocalyptic number.

38043840 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 38043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63057024).

38043840 is an abundant number, since it is smaller than the sum of its proper divisors (88070208).

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

38043840 is a wasteful number, since it uses less digits than its factorization.

38043840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 38043840 is about 6167.9688715168. The cubic root of 38043840 is about 336.3267795904.

It can be divided in two parts, 38043 and 840, that added together give a palindrome (38883).

The spelling of 38043840 in words is "thirty-eight million, forty-three thousand, eight hundred forty".