28671742 has 8 divisors (see below), whose sum is σ = 46917432. Its totient is φ = 13032600.

The previous prime is 28671733. The next prime is 28671757. The reversal of 28671742 is 24717682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651609 + ... + 651652.

It is an arithmetic number, because the mean of its divisors is an integer number (5864679).

Almost surely, 2^28671742 is an apocalyptic number.

28671742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28671742 is a deficient number, since it is larger than the sum of its proper divisors (18245690).

28671742 is a wasteful number, since it uses less digits than its factorization.

28671742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303274.

The product of its digits is 37632, while the sum is 37.

The square root of 28671742 is about 5354.6000784372. The cubic root of 28671742 is about 306.0680712047.

The spelling of 28671742 in words is "twenty-eight million, six hundred seventy-one thousand, seven hundred forty-two".