38221245 has 24 divisors (see below), whose sum is σ = 66557400. Its totient is φ = 20290176.

The previous prime is 38221241. The next prime is 38221273. The reversal of 38221245 is 54212283.

It can be written as a sum of positive squares in 4 ways, for example, as 7518564 + 30702681 = 2742^2 + 5541^2 .

It is not a de Polignac number, because 38221245 - 2² = 38221241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38221241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8451 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (2773225).

Almost surely, 2^38221245 is an apocalyptic number.

It is an amenable number.

38221245 is a deficient number, since it is larger than the sum of its proper divisors (28336155).

38221245 is a wasteful number, since it uses less digits than its factorization.

38221245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949 (or 3946 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 38221245 is about 6182.3332973886. Note that the first 3 decimals coincide. The cubic root of 38221245 is about 336.8487523766.

The spelling of 38221245 in words is "thirty-eight million, two hundred twenty-one thousand, two hundred forty-five".