20375642 has 8 divisors (see below), whose sum is σ = 34929696. Its totient is φ = 8732412.

The previous prime is 20375633. The next prime is 20375699. The reversal of 20375642 is 24657302.

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

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 3 ways as a sum of consecutive naturals, for example, 727688 + ... + 727715.

It is an arithmetic number, because the mean of its divisors is an integer number (4366212).

Almost surely, 2^20375642 is an apocalyptic number.

20375642 is a deficient number, since it is larger than the sum of its proper divisors (14554054).

20375642 is a wasteful number, since it uses less digits than its factorization.

20375642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455412.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20375642 is about 4513.9386349396. The cubic root of 20375642 is about 273.1306472134.

The spelling of 20375642 in words is "twenty million, three hundred seventy-five thousand, six hundred forty-two".