38021982 has 16 divisors (see below), whose sum is σ = 76349952. Its totient is φ = 12623000.

The previous prime is 38021981. The next prime is 38021993. The reversal of 38021982 is 28912083.

It is a super-2 number, since 2×38021982² = 2891342230416648, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38021981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11118 + ... + 14129.

It is an arithmetic number, because the mean of its divisors is an integer number (4771872).

Almost surely, 2^38021982 is an apocalyptic number.

38021982 is an abundant number, since it is smaller than the sum of its proper divisors (38327970).

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

38021982 is a wasteful number, since it uses less digits than its factorization.

38021982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25503.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 38021982 is about 6166.1967208321. The cubic root of 38021982 is about 336.2623553270.

The spelling of 38021982 in words is "thirty-eight million, twenty-one thousand, nine hundred eighty-two".