38811380 has 48 divisors (see below), whose sum is σ = 85639680. Its totient is φ = 14755200.

The previous prime is 38811359. The next prime is 38811389. The reversal of 38811380 is 8311883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38811389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36050 + ... + 37110.

It is an arithmetic number, because the mean of its divisors is an integer number (1784160).

Almost surely, 2^38811380 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 38811380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42819840).

38811380 is an abundant number, since it is smaller than the sum of its proper divisors (46828300).

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

38811380 is a wasteful number, since it uses less digits than its factorization.

38811380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 38811380 is about 6229.8780084364. The cubic root of 38811380 is about 338.5735508947.

The spelling of 38811380 in words is "thirty-eight million, eight hundred eleven thousand, three hundred eighty".