38838780 has 36 divisors (see below), whose sum is σ = 117811512. Its totient is φ = 10356960.

The previous prime is 38838739. The next prime is 38838781. The reversal of 38838780 is 8783883.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38838781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107706 + ... + 108065.

It is an arithmetic number, because the mean of its divisors is an integer number (3272542).

Almost surely, 2^38838780 is an apocalyptic number.

38838780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38838780 is an abundant number, since it is smaller than the sum of its proper divisors (78972732).

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

38838780 is a wasteful number, since it uses less digits than its factorization.

38838780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215786 (or 215781 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 38838780 is about 6232.0767004266. The cubic root of 38838780 is about 338.6532073687.

The spelling of 38838780 in words is "thirty-eight million, eight hundred thirty-eight thousand, seven hundred eighty".