38777228 has 54 divisors (see below), whose sum is σ = 81573156. Its totient is φ = 16080624.

The previous prime is 38777227. The next prime is 38777231. The reversal of 38777228 is 82277783.

38777228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38777228² = 3007346822727968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38777227) 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 17 ways as a sum of consecutive naturals, for example, 362351 + ... + 362457.

It is an arithmetic number, because the mean of its divisors is an integer number (1510614).

Almost surely, 2^38777228 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 38777228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40786578).

38777228 is an abundant number, since it is smaller than the sum of its proper divisors (42795928).

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

38777228 is a wasteful number, since it uses less digits than its factorization.

38777228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 159 counting only the distinct ones).

The product of its digits is 263424, while the sum is 44.

The square root of 38777228 is about 6227.1364205387. The cubic root of 38777228 is about 338.4742127008.

The spelling of 38777228 in words is "thirty-eight million, seven hundred seventy-seven thousand, two hundred twenty-eight".