20392442 has 8 divisors (see below), whose sum is σ = 34958496. Its totient is φ = 8739612.

The previous prime is 20392429. The next prime is 20392447. The reversal of 20392442 is 24429302.

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 (20392447) 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, 728288 + ... + 728315.

It is an arithmetic number, because the mean of its divisors is an integer number (4369812).

Almost surely, 2^20392442 is an apocalyptic number.

20392442 is a deficient number, since it is larger than the sum of its proper divisors (14566054).

20392442 is a wasteful number, since it uses less digits than its factorization.

20392442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456612.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20392442 is about 4515.7991540811. The cubic root of 20392442 is about 273.2056932632.

The spelling of 20392442 in words is "twenty million, three hundred ninety-two thousand, four hundred forty-two".