38660290 has 16 divisors (see below), whose sum is σ = 69659640. Its totient is φ = 15448320.

The previous prime is 38660287. The next prime is 38660291. The reversal of 38660290 is 9206683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38056561 + 603729 = 6169^2 + 777^2 .

It is not an unprimeable number, because it can be changed into a prime (38660291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16810 + ... + 18970.

Almost surely, 2^38660290 is an apocalyptic number.

38660290 is a deficient number, since it is larger than the sum of its proper divisors (30999350).

38660290 is a wasteful number, since it uses less digits than its factorization.

38660290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 38660290 is about 6217.7399430983. The cubic root of 38660290 is about 338.1336317886.

The spelling of 38660290 in words is "thirty-eight million, six hundred sixty thousand, two hundred ninety".