20029642 has 8 divisors (see below), whose sum is σ = 31350816. Its totient is φ = 9579372.

The previous prime is 20029631. The next prime is 20029657. The reversal of 20029642 is 24692002.

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

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, 217668 + ... + 217759.

It is an arithmetic number, because the mean of its divisors is an integer number (3918852).

Almost surely, 2^20029642 is an apocalyptic number.

20029642 is a deficient number, since it is larger than the sum of its proper divisors (11321174).

20029642 is a wasteful number, since it uses less digits than its factorization.

20029642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435452.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20029642 is about 4475.4488043100. The cubic root of 20029642 is about 271.5757967418.

The spelling of 20029642 in words is "twenty million, twenty-nine thousand, six hundred forty-two".