38977220 has 12 divisors (see below), whose sum is σ = 81852204. Its totient is φ = 15590880.

The previous prime is 38977139. The next prime is 38977223. The reversal of 38977220 is 2277983.

38977220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29441476 + 9535744 = 5426^2 + 3088^2 .

It is not an unprimeable number, because it can be changed into a prime (38977223) 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 3 ways as a sum of consecutive naturals, for example, 974411 + ... + 974450.

It is an arithmetic number, because the mean of its divisors is an integer number (6821017).

Almost surely, 2^38977220 is an apocalyptic number.

It is an amenable number.

38977220 is an abundant number, since it is smaller than the sum of its proper divisors (42874984).

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

38977220 is a wasteful number, since it uses less digits than its factorization.

38977220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948870 (or 1948868 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 38977220 is about 6243.1738723185. The cubic root of 38977220 is about 339.0551042651.

The spelling of 38977220 in words is "thirty-eight million, nine hundred seventy-seven thousand, two hundred twenty".