28403350642 has 8 divisors (see below), whose sum is σ = 42721117056. Its totient is φ = 14162978292.

The previous prime is 28403350621. The next prime is 28403350649. The reversal of 28403350642 is 24605330482.

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

It is not an unprimeable number, because it can be changed into a prime (28403350649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19347598 + ... + 19349065.

It is an arithmetic number, because the mean of its divisors is an integer number (5340139632).

Almost surely, 2^28403350642 is an apocalyptic number.

28403350642 is a deficient number, since it is larger than the sum of its proper divisors (14317766414).

28403350642 is a wasteful number, since it uses less digits than its factorization.

28403350642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38697032.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 28403350642 in words is "twenty-eight billion, four hundred three million, three hundred fifty thousand, six hundred forty-two".