38420500 has 48 divisors (see below), whose sum is σ = 85909824. Its totient is φ = 15002400.

The previous prime is 38420497. The next prime is 38420507. The reversal of 38420500 is 502483.

It is a super-2 number, since 2×38420500² = 2952269640500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38420507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20607 + ... + 22393.

It is an arithmetic number, because the mean of its divisors is an integer number (1789788).

Almost surely, 2^38420500 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 38420500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42954912).

38420500 is an abundant number, since it is smaller than the sum of its proper divisors (47489324).

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

38420500 is a wasteful number, since it uses less digits than its factorization.

38420500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 38420500 is about 6198.4272198680. The cubic root of 38420500 is about 337.4330914461.

Adding to 38420500 its reverse (502483), we get a palindrome (38922983).

The spelling of 38420500 in words is "thirty-eight million, four hundred twenty thousand, five hundred".