20452642 has 8 divisors (see below), whose sum is σ = 35061696. Its totient is φ = 8765412.

The previous prime is 20452639. The next prime is 20452643. The reversal of 20452642 is 24625402.

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 (20452643) 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, 730438 + ... + 730465.

It is an arithmetic number, because the mean of its divisors is an integer number (4382712).

Almost surely, 2^20452642 is an apocalyptic number.

20452642 is a deficient number, since it is larger than the sum of its proper divisors (14609054).

20452642 is a wasteful number, since it uses less digits than its factorization.

20452642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460912.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20452642 is about 4522.4597289528. The cubic root of 20452642 is about 273.4742703008.

The spelling of 20452642 in words is "twenty million, four hundred fifty-two thousand, six hundred forty-two".