38440836 has 72 divisors (see below), whose sum is σ = 112205184. Its totient is φ = 10869120.

The previous prime is 38440823. The next prime is 38440849. The reversal of 38440836 is 63804483.

It is an interprime number because it is at equal distance from previous prime (38440823) and next prime (38440849).

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

It is a self number, because there is not a number n which added to its sum of digits gives 38440836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25216 + ... + 26696.

Almost surely, 2^38440836 is an apocalyptic number.

38440836 is a gapful number since it is divisible by the number (36) 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 38440836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56102592).

38440836 is an abundant number, since it is smaller than the sum of its proper divisors (73764348).

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

38440836 is a wasteful number, since it uses less digits than its factorization.

38440836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 38440836 is about 6200.0674189883. The cubic root of 38440836 is about 337.4926154763.

The spelling of 38440836 in words is "thirty-eight million, four hundred forty thousand, eight hundred thirty-six".