38122690 has 8 divisors (see below), whose sum is σ = 68620860. Its totient is φ = 15249072.

The previous prime is 38122657. The next prime is 38122699. The reversal of 38122690 is 9622183.

It can be written as a sum of positive squares in 2 ways, for example, as 33674809 + 4447881 = 5803^2 + 2109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×38122690² = 2906678985672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38122699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906125 + ... + 1906144.

Almost surely, 2^38122690 is an apocalyptic number.

38122690 is a deficient number, since it is larger than the sum of its proper divisors (30498170).

38122690 is a wasteful number, since it uses less digits than its factorization.

38122690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812276.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 38122690 is about 6174.3574564484. The cubic root of 38122690 is about 336.5589772008.

The spelling of 38122690 in words is "thirty-eight million, one hundred twenty-two thousand, six hundred ninety".