38881445 has 4 divisors (see below), whose sum is σ = 46657740. Its totient is φ = 31105152.

The previous prime is 38881439. The next prime is 38881457. The reversal of 38881445 is 54418883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4330561 + 34550884 = 2081^2 + 5878^2 .

It is a cyclic number.

It is not a de Polignac number, because 38881445 - 2¹⁴ = 38865061 is a prime.

It is a congruent number.

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, 3888140 + ... + 3888149.

It is an arithmetic number, because the mean of its divisors is an integer number (11664435).

Almost surely, 2^38881445 is an apocalyptic number.

It is an amenable number.

38881445 is a deficient number, since it is larger than the sum of its proper divisors (7776295).

38881445 is an equidigital number, since it uses as much as digits as its factorization.

38881445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7776294.

The product of its digits is 122880, while the sum is 41.

The square root of 38881445 is about 6235.4987771629. The cubic root of 38881445 is about 338.7771672497. Note that the first 3 decimals are identical.

The spelling of 38881445 in words is "thirty-eight million, eight hundred eighty-one thousand, four hundred forty-five".