38821490 has 8 divisors (see below), whose sum is σ = 69878700. Its totient is φ = 15528592.

The previous prime is 38821477. The next prime is 38821501. The reversal of 38821490 is 9412883.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37613689 + 1207801 = 6133^2 + 1099^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 38821490.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941065 + ... + 1941084.

Almost surely, 2^38821490 is an apocalyptic number.

38821490 is a deficient number, since it is larger than the sum of its proper divisors (31057210).

38821490 is a wasteful number, since it uses less digits than its factorization.

38821490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882156.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 38821490 is about 6230.6893679592. The cubic root of 38821490 is about 338.6029467525.

The spelling of 38821490 in words is "thirty-eight million, eight hundred twenty-one thousand, four hundred ninety".