27972038 has 16 divisors (see below), whose sum is σ = 45157824. Its totient is φ = 12946560.

The previous prime is 27972029. The next prime is 27972041. The reversal of 27972038 is 83027972.

27972038 = T₉₂₇ + T₉₂₈ + ... + T₉₈₇.

It is a junction number, because it is equal to n+sod(n) for n = 27971992 and 27972010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4670 + ... + 8817.

It is an arithmetic number, because the mean of its divisors is an integer number (2822364).

Almost surely, 2^27972038 is an apocalyptic number.

27972038 is a deficient number, since it is larger than the sum of its proper divisors (17185786).

27972038 is a wasteful number, since it uses less digits than its factorization.

27972038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13567.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 27972038 is about 5288.8598015073. The cubic root of 27972038 is about 303.5577812576.

The spelling of 27972038 in words is "twenty-seven million, nine hundred seventy-two thousand, thirty-eight".