38347990 has 16 divisors (see below), whose sum is σ = 69124752. Its totient is φ = 15317344.

The previous prime is 38347979. The next prime is 38347993. The reversal of 38347990 is 9974383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38347993) 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 7 ways as a sum of consecutive naturals, for example, 5952 + ... + 10588.

It is an arithmetic number, because the mean of its divisors is an integer number (4320297).

Almost surely, 2^38347990 is an apocalyptic number.

38347990 is a deficient number, since it is larger than the sum of its proper divisors (30776762).

38347990 is a wasteful number, since it uses less digits than its factorization.

38347990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5471.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 38347990 is about 6192.5753931624. The cubic root of 38347990 is about 337.2206815627.

The spelling of 38347990 in words is "thirty-eight million, three hundred forty-seven thousand, nine hundred ninety".