38783490 has 16 divisors (see below), whose sum is σ = 93080448. Its totient is φ = 10342256.

The previous prime is 38783489. The next prime is 38783509. The reversal of 38783490 is 9438783.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 646362 + ... + 646421.

It is an arithmetic number, because the mean of its divisors is an integer number (5817528).

Almost surely, 2^38783490 is an apocalyptic number.

38783490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38783490 is an abundant number, since it is smaller than the sum of its proper divisors (54296958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38783490 is a wasteful number, since it uses less digits than its factorization.

38783490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292793.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 38783490 is about 6227.6391995683. The cubic root of 38783490 is about 338.4924313956.

The spelling of 38783490 in words is "thirty-eight million, seven hundred eighty-three thousand, four hundred ninety".