28006742 has 8 divisors (see below), whose sum is σ = 42585816. Its totient is φ = 13811472.

The previous prime is 28006697. The next prime is 28006753. The reversal of 28006742 is 24760082.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95768 + ... + 96059.

It is an arithmetic number, because the mean of its divisors is an integer number (5323227).

Almost surely, 2^28006742 is an apocalyptic number.

28006742 is a deficient number, since it is larger than the sum of its proper divisors (14579074).

28006742 is a wasteful number, since it uses less digits than its factorization.

28006742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191902.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28006742 is about 5292.1396429044. The cubic root of 28006742 is about 303.6832674732.

The spelling of 28006742 in words is "twenty-eight million, six thousand, seven hundred forty-two".