38222091 has 16 divisors (see below), whose sum is σ = 59606400. Its totient is φ = 24139944.

The previous prime is 38222089. The next prime is 38222179. The reversal of 38222091 is 19022283.

It is a happy number.

It is not a de Polignac number, because 38222091 - 2¹ = 38222089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (38222011) 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, 36741 + ... + 37766.

It is an arithmetic number, because the mean of its divisors is an integer number (3725400).

Almost surely, 2^38222091 is an apocalyptic number.

38222091 is a deficient number, since it is larger than the sum of its proper divisors (21384309).

38222091 is a wasteful number, since it uses less digits than its factorization.

38222091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74535 (or 74529 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 38222091 is about 6182.4017177793. The cubic root of 38222091 is about 336.8512376606.

The spelling of 38222091 in words is "thirty-eight million, two hundred twenty-two thousand, ninety-one".