38209490 has 16 divisors (see below), whose sum is σ = 75029760. Its totient is φ = 13894320.

The previous prime is 38209459. The next prime is 38209511. The reversal of 38209490 is 9490283.

It is a self number, because there is not a number n which added to its sum of digits gives 38209490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173570 + ... + 173789.

It is an arithmetic number, because the mean of its divisors is an integer number (4689360).

Almost surely, 2^38209490 is an apocalyptic number.

38209490 is a deficient number, since it is larger than the sum of its proper divisors (36820270).

38209490 is a wasteful number, since it uses less digits than its factorization.

38209490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347377.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 38209490 is about 6181.3825314407. The cubic root of 38209490 is about 336.8142160597.

The spelling of 38209490 in words is "thirty-eight million, two hundred nine thousand, four hundred ninety".