20462642 has 8 divisors (see below), whose sum is σ = 30731376. Its totient is φ = 10218852.

The previous prime is 20462627. The next prime is 20462647. The reversal of 20462642 is 24626402.

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 (20462647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (3841422).

Almost surely, 2^20462642 is an apocalyptic number.

20462642 is a deficient number, since it is larger than the sum of its proper divisors (10268734).

20462642 is a wasteful number, since it uses less digits than its factorization.

20462642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12472.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20462642 is about 4523.5651868852. The cubic root of 20462642 is about 273.5188333638.

The spelling of 20462642 in words is "twenty million, four hundred sixty-two thousand, six hundred forty-two".