38947090 has 64 divisors (see below), whose sum is σ = 87220224. Its totient is φ = 12192768.

The previous prime is 38947063. The next prime is 38947091. The reversal of 38947090 is 9074983.

38947090 is nontrivially palindromic in base 8.

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

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (38947091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115402 + ... + 115738.

It is an arithmetic number, because the mean of its divisors is an integer number (1362816).

Almost surely, 2^38947090 is an apocalyptic number.

38947090 is an abundant number, since it is smaller than the sum of its proper divisors (48273134).

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

38947090 is a wasteful number, since it uses less digits than its factorization.

38947090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 38947090 is about 6240.7603703395. The cubic root of 38947090 is about 338.9677167797.

The spelling of 38947090 in words is "thirty-eight million, nine hundred forty-seven thousand, ninety".