38978582 has 4 divisors (see below), whose sum is σ = 58467876. Its totient is φ = 19489290.

The previous prime is 38978579. The next prime is 38978587. The reversal of 38978582 is 28587983.

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

It is a self number, because there is not a number n which added to its sum of digits gives 38978582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38978587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9744644 + ... + 9744647.

It is an arithmetic number, because the mean of its divisors is an integer number (14616969).

Almost surely, 2^38978582 is an apocalyptic number.

38978582 is a deficient number, since it is larger than the sum of its proper divisors (19489294).

38978582 is a wasteful number, since it uses less digits than its factorization.

38978582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489293.

The product of its digits is 967680, while the sum is 50.

The square root of 38978582 is about 6243.2829504997. The cubic root of 38978582 is about 339.0590534750.

The spelling of 38978582 in words is "thirty-eight million, nine hundred seventy-eight thousand, five hundred eighty-two".