38398690 has 16 divisors (see below), whose sum is σ = 75401280. Its totient is φ = 13963120.

The previous prime is 38398687. The next prime is 38398693. The reversal of 38398690 is 9689383.

38398690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38398687) and next prime (38398693).

It is a super-2 number, since 2×38398690² = 2948918787432200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38398690.

It is not an unprimeable number, because it can be changed into a prime (38398693) 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 7 ways as a sum of consecutive naturals, for example, 174430 + ... + 174649.

It is an arithmetic number, because the mean of its divisors is an integer number (4712580).

Almost surely, 2^38398690 is an apocalyptic number.

38398690 is a deficient number, since it is larger than the sum of its proper divisors (37002590).

38398690 is a wasteful number, since it uses less digits than its factorization.

38398690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349097.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 38398690 is about 6196.6676528599. The cubic root of 38398690 is about 337.3692296299.

The spelling of 38398690 in words is "thirty-eight million, three hundred ninety-eight thousand, six hundred ninety".