38188040 has 64 divisors (see below), whose sum is σ = 94392000. Its totient is φ = 13789440.

The previous prime is 38188021. The next prime is 38188067. The reversal of 38188040 is 4088183.

It is a junction number, because it is equal to n+sod(n) for n = 38187988 and 38188006.

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, 100571 + ... + 100949.

It is an arithmetic number, because the mean of its divisors is an integer number (1474875).

Almost surely, 2^38188040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38188040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47196000).

38188040 is an abundant number, since it is smaller than the sum of its proper divisors (56203960).

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

38188040 is a wasteful number, since it uses less digits than its factorization.

38188040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 38188040 is about 6179.6472391230. The cubic root of 38188040 is about 336.7511774684.

The spelling of 38188040 in words is "thirty-eight million, one hundred eighty-eight thousand, forty".