28411982 has 4 divisors (see below), whose sum is σ = 42617976. Its totient is φ = 14205990.

The previous prime is 28411961. The next prime is 28411987. The reversal of 28411982 is 28911482.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28411987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7102994 + ... + 7102997.

It is an arithmetic number, because the mean of its divisors is an integer number (10654494).

Almost surely, 2^28411982 is an apocalyptic number.

28411982 is a deficient number, since it is larger than the sum of its proper divisors (14205994).

28411982 is a wasteful number, since it uses less digits than its factorization.

28411982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14205993.

The product of its digits is 9216, while the sum is 35.

The square root of 28411982 is about 5330.2891103579. The cubic root of 28411982 is about 305.1409614477.

Subtracting 28411982 from its reverse (28911482), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 28411982 in words is "twenty-eight million, four hundred eleven thousand, nine hundred eighty-two".