38972782 has 4 divisors (see below), whose sum is σ = 58459176. Its totient is φ = 19486390.

The previous prime is 38972777. The next prime is 38972807. The reversal of 38972782 is 28727983.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9743194 + ... + 9743197.

It is an arithmetic number, because the mean of its divisors is an integer number (14614794).

Almost surely, 2^38972782 is an apocalyptic number.

38972782 is a deficient number, since it is larger than the sum of its proper divisors (19486394).

38972782 is a wasteful number, since it uses less digits than its factorization.

38972782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19486393.

The product of its digits is 338688, while the sum is 46.

The square root of 38972782 is about 6242.8184340088. The cubic root of 38972782 is about 339.0422353494.

The spelling of 38972782 in words is "thirty-eight million, nine hundred seventy-two thousand, seven hundred eighty-two".