20074642 has 8 divisors (see below), whose sum is σ = 34413696. Its totient is φ = 8603412.

The previous prime is 20074619. The next prime is 20074643. The reversal of 20074642 is 24647002.

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 (20074643) 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, 716938 + ... + 716965.

It is an arithmetic number, because the mean of its divisors is an integer number (4301712).

Almost surely, 2^20074642 is an apocalyptic number.

20074642 is a deficient number, since it is larger than the sum of its proper divisors (14339054).

20074642 is a wasteful number, since it uses less digits than its factorization.

20074642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433912.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20074642 is about 4480.4734124867. The cubic root of 20074642 is about 271.7790250395.

The spelling of 20074642 in words is "twenty million, seventy-four thousand, six hundred forty-two".