38906550 has 72 divisors (see below), whose sum is σ = 107939520. Its totient is φ = 10036800.

The previous prime is 38906521. The next prime is 38906551. The reversal of 38906550 is 5560983.

38906550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38906551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12556 + ... + 15344.

It is an arithmetic number, because the mean of its divisors is an integer number (1499160).

Almost surely, 2^38906550 is an apocalyptic number.

38906550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38906550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53969760).

38906550 is an abundant number, since it is smaller than the sum of its proper divisors (69032970).

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

38906550 is a wasteful number, since it uses less digits than its factorization.

38906550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 38906550 is about 6237.5115230354. The cubic root of 38906550 is about 338.8500655258.

It can be divided in two parts, 3890 and 6550, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 38906550 in words is "thirty-eight million, nine hundred six thousand, five hundred fifty".